The term Cockney has both geographical and linguistic associations. Geographically and culturally, it often refers to working-class Londoners, particularly those in the East End. Linguistically, it refers to the form of English spoken by this group.
The earliest recorded use of the term is 1362 in The vision of William concerning Piers Plowman (Passus VI) by William Langland and it is used to mean a small, misshapen egg, from Middle English coken (of cocks) and ey (egg) so literally 'a cock's egg'. In the Reeve's Tale by Geoffrey Chaucer (circa 1386) it appears as "cokenay", and the meaning is "a child tenderly brought up, an effeminate fellow, a milksop".   By 1521 it was in use by country people as a derogatory reference for the effeminate town-dwellers.  The term was used to describe those born within earshot of the Bow Bells in 1600, when Samuel Rowlands, in his satire The Letting of Humours Blood in the Head-Vaine, referred to 'a Bowe-bell Cockney'. Traveller and writer Fynes Moryson stated in his work An Itinerary that "Londoners, and all within the sound of Bow Bells, are in reproach called Cockneys." John Minsheu (or Minshew) was the first lexicographer to define the word in this sense, in his Ductor in Linguas (1617), where he referred to 'A Cockney or Cockny, applied only to one born within the sound of Bow bell, that is in the City of London'. However, the etymologies he gave (from 'cock' and 'neigh', or from Latin incoctus, raw) were incorrect.Francis Grose's A Classical Dictionary of the Vulgar Tongue (1785) derives the term from the following story:
A citizen of London, being in the country, and hearing a horse neigh, exclaimed, Lord! how that horse laughs! A by-stander telling him that noise was called Neighing, the next morning, when the cock crowed, the citizen to shew he had not forgot what was told him, cried out, Do you hear how the Cock Neighs?  Given the earlier meanings above, this story is probably apocryphal.
An alternative derivation is from the word Cockaigne, a term for a mythical luxurious country, first recorded in 1362. This was then used humorously to refer to London, and over time had a number of spellings: Cocagne, Cockayne, Cocknay and Cockney. The latter two spellings could be used to refer to both pampered children, and residents of London, as to pamper or spoil a child was 'to cocker' him.
The region in which "Cockneys" are thought to reside is not clearly defined. A common view is that in order to be a Cockney, one must have been born within earshot of the Bow Bells. However, the church of St Mary-le-Bow was destroyed in 1666 by the Great Fire of London and rebuilt by Sir Christopher Wren. After the bells were destroyed again in 1941 in The Blitz of World War II, and before they were replaced in 1961, there was a period when by this definition no 'Bow-bell' Cockneys could be born. The use of such a literal definition produces other problems, since the area around the church is no longer residential and the noise of the area makes it unlikely that many people would be born within earshot of the bells anymore, although Guy's Hospital and St Thomas' hospital are both within the defined area covered by the sound of the Bow Bells, suggesting a reasonable number of South London Cockneys continue to be born within the sound of the bells. The closest maternity unit was the East London Maternity Hospital in Stepney which was 2.5 miles from St Mary-le-Bow and was in use from 1884 to 1968.
A study was carried out by the city in 2000 to see how far the Bow Bells could be heard, and it was estimated that the bells would have been heard six miles to the east, five miles to the north, three miles to the south, and four miles to the west. According to the legend of Dick Whittington the bells could once be heard from as far away as Highgate. The association with Cockney and the East End in the public imagination may be due to many people assuming that Bow Bells are to be found in the district of Bow, rather than the lesser known St Mary-le-Bow church. Thus while all East Enders are Cockneys, not all Cockneys are East Enders.
The traditional core districts of the East End are Bethnal Green, Whitechapel, Spitalfields, Stepney, Wapping, Limehouse, Poplar, Clerkenwell, Aldgate, Shoreditch, Millwall, Hackney, Hoxton, Bow and Mile End. "The Borough" to the south of Waterloo, London and Tower Bridge were also considered Cockney before redevelopment all but extinguished the local working class areas, and now Bermondsey is the only Cockney area south of the Thames, although Pearly Kings and Queens can be found as far out as Peckham and Penge. The area north of the Thames gradually expanded to include East Ham, Stratford, West Ham and Plaistow as more land was built upon.
Migration of Cockneys has also led to migration of the dialect. Ever since the building of the Becontree housing estate, the Barking & Dagenham area has spoken Cockney. As Chatham Dockyard expanded during the 18th century, large numbers of workers were moved from the dockland areas of London, bringing with them a "Cockney" accent and vocabulary. Within a short period this famously distinguished Chatham from the neighbouring areas, including the City of Rochester, which had a Kentish accent. In Essex, towns that mostly grew up from post-war migration out of London (e.g. Basildon and Harlow) often have a strong Cockney influence on local speech. However, the early dialect researcher Alexander John Ellis believed that Cockney developed due to the influence of Essex dialect on London speech. In recent years, there has been a move away from Cockney in the inner-city areas of London towards Multicultural London English whereas the eastern outskirts of Greater London have more speakers of Cockney dialect. Today cockney areas are situated in Canvey Island, Dagenham, Barking, Romford, Chigwell, Harlow, Tottenham, Enfield, Basildon, Thurrock,Cheshunt, Bexley, Sidcup, Welling, Eltham, Islington and Brimsdown. 
Famous Cockney people
- Alfie Bass (actor, born in Bethnal Green)
- Steven Berkoff (actor, born in Stepney)
- Marc Bolan (singer, musician, born in Hackney)
- Bernard Bresslaw (actor, born in Stepney)
- Eric Bristow (darts player, born in Hackney)
- Max Bygraves (singer, songwriter and comedian, born in Rotherhithe)
- Michael Caine (Hollywood film star, born in Rotherhithe)
- George Carey (archbishop, born in Bow)
- Charlie Chaplin (Hollywood film star, born in Walworth)
- Phil Collen (guitarist Def Leppard, musician, born in Hackney)
- Dave Courtney (bodyguard/actor, born in Bermondsey)
- Phil Daniels (actor, born in Islington)
- Roger Delgado, (actor, born in Whitechapel)
- Craig Fairbrass (actor, born in Stepney)
- Bud Flanagan, (actor, comedian and singer, born in Whitechapel)
- Samantha Fox (model/singer, born in Mile End)
- Steve Harris, (founder, bass player Iron Maiden, born in Leytonstone)
- Gary Holton (actor, musician, born in Hackney)
- Kenney Jones (musician, born in Stepney)
- Kray twins, Ronald and Reginald (gangsters, born in Hoxton)
- Lenny McLean (bare knuckle/unlicensed boxer/actor, born in Hoxton)
- Hoxton Tom McCourt (musician/face, born in Hoxton)
- Ronnie Lane (musician, born in Bow)
- Joe Lovejoy (sports journalist, born in Bow, London)
- Danny Murphy, (footballer, born in Bermondsey)
- Dizzee Rascal (musician/producer, born in Bow.)
- Mike Reid (actor/comedian, born in Hackney)
- Philip Ridley (artist, writer, film maker, photographer born in Bethnal Green)
- Roy Shaw (bare knuckle/unlicensed boxer, born in Stepney)
- Terence Stamp (actor, born in Stepney)
- Tommy Steele (singer, musician and actor, born in Bermondsey)
- Alan Sugar (businessman, born in Hackney)
- Sid Vicious (Sex Pistols vocalist and bassist, born in Hackney)
- Barbara Windsor (actress, born in Shoreditch)
- Ray Winstone (actor, born in Hackney)
- Jah Wobble (musician, composer, writer, born in Stepney)
- Colin Wood (writer, born in Stepney)
Migration and evolution
Today, certain elements of Cockney English are declining in usage within the area it is most associated with, displaced by a Jamaican Creole-influenced variety popular among young Londoners (sometimes referred to as "Jafaican"), particularly, though far from exclusively, those of Afro-Caribbean descent.
Nevertheless, the glottal stop, double negatives, and the vocalization of the dark L (and other features of Cockney speech), along with some rhyming slang terms are still in common usage. As cockneys have moved out of London, they have often taken their dialect with them. There are actually more speakers of the Cockney dialect in Essex, Kent and parts of Hertfordshire that border Greater London than in Whitechapel, even though the former is not in the traditional Cockney area.
A July 2010 report by Paul Kerswill, Professor of Sociolinguistics at Lancaster University, called Multicultural London English: the emergence, acquisition and diffusion of a new variety, claimed that the Cockney accent will disappear from London's streets within 30 years. The study, funded by the Economic and Social Research Council, said the accent, which has been around for more than 500 years, is being replaced in London by a new hybrid language. "Cockney in the East End is now transforming itself into Multicultural London English, a new, melting-pot mixture of all those people living here who learnt English as a second language", Prof Kerswill said.
Cockney speakers have a distinctive accent and dialect, and occasionally use rhyming slang. The Survey of English Dialects took a recording from a long-time resident of Hackney, and the BBC made another recording in 1999 which showed how the accent had changed. 
John Camden Hotten, in his Slang Dictionary of 1859, makes reference to "their use of a peculiar slang language" when describing the costermongers of London's East End. In terms of other slang, there are also several borrowings from Yiddish, including kosher (originally Hebrew, via Yiddish, meaning legitimate) and stumm (originally German, via Yiddish, meaning quiet), as well as Romany, for example wonga (meaning money, from the Romany "wanga" meaning coal), and cushty (from the Romany kushtipen, meaning good). A fake Cockney accent is sometimes called 'Mockney'.
- As with many accents of England, Cockney is non-rhotic. A final -er is pronounced or lowered in broad Cockney. As with all or nearly all non-rhotic accents, the paired lexical sets commA and lettER, PALM/BATH and START, THOUGHT and NORTH/FORCE, are merged. Thus, the last syllable of words like cheetah can be pronounced as well in broad Cockney.
- Broad is used in words such as bath, path, demand. This originated in London in the 16th-17th centuries and is also part of Received Pronunciation.
- T glottalization
Use of the glottal stop as an allophone of in various positions, including after a stressed syllable. Glottal stops also occur, albeit less frequently for and, and occasionally for mid-word consonants. For example, Richard Whiteing spelt "Hyde Park" as Hy' Par' . Like and light can be homophones. "Clapham" can be said as Cla'am. may also be flapped intervocalically. London are often aspirated in intervocalic and final environments, e.g., upper, utter, rocker, up, out, rock, where RP is traditionally described as having the unaspirated variants. Also, in broad Cockney at least, the degree of aspiration is typically greater than in RP, and may often also involve some degree of affrication. Affrication may be encountered in initial, intervocalic, and final position.
- This feature results in Cockney being often mentioned in textbooks about Semitic languages while explaining how to pronounce the glottal stop.
- can become in any environment. "thin", "maths".
- can become in any environment except word-initially when it can be . "they", "bother".
- Yod-coalescence in words such as tune or reduce (compare traditional RP).
- H-dropping. Sivertsen considers that is to some extent a stylistic marker of emphasis in Cockney.
- Diphthong alterations:
- → : "beet"
- → : "bait"
- → or even in "vigorous, dialectal" Cockney. The second element may be reduced or absent (with compensatory lengthening of the first element), so that there are variants like . This means that pairs such as laugh-life, Barton-biting may become homophones:, . But this neutralisation is an optional, recoverable one: "bite"
- → : "choice"
- → or a monophthongal, perhaps with little lip rounding, or : "boot"
- → this diphthong typically starts in the area of the London, . The endpoint may be, but more commonly it is rather opener and/or lacking any lip rounding, thus being a kind of centralized . The broadest Cockney variant approaches : "coat"
- may be or a monophthongal : "town"
- Other vowel differences include
- may be or, with the latter occurring before voiced consonants, particularly before : "back", "bad"
- may be,, or before certain voiced consonants, particularly before : "bed"
- may be a somewhat less open : "jumped up"
- → or a closing diphthong of the type when in non-final position, with the latter variants being more common in broad Cockney: "sauce"-"source", "lord", "water"
- → or a centring diphthong of the type when in final position, with the latter variants being more common in broad Cockney; thus "saw"-"sore"-"soar", "law"-"lore", "war"-"wore". The diphthong is retained before inflectional endings, so that board and pause can contrast with bored and paws
- becomes something around or even in broad Cockney before dark l. These variants are retained when the addition of a suffix turns the dark l clear. Thus a phonemic split has occurred in London English, exemplified by the minimal pair wholly vs. holy . The development of L-vocalization (see next section) leads to further pairs such as sole-soul vs. so-sew, bowl vs. Bow, shoulder vs. odour, while associated vowel neutralisations may make doll a homophone of dole, compare dough . All this reinforces the phonemic nature of the opposition and increases its functional load. It is now well-established in all kinds of London-flavoured accents, from broad Cockney to near-RP.
- Vocalisation of dark L, hence for Millwall. The actual realization of a vocalized is influenced by surrounding vowels and it may be realized as,, or . It is also transcribed as a semivowel by some linguists, e.g., Coggle and Rosewarne. Relatedly, there are many possible vowel neutralisations and absorptions in the context of a following "dark L" or its vocalised version; these include:
- In broad Cockney, and to some extent in general popular London speech, a vocalised is entirely absorbed by a preceding : i.e., salt and sort become homophones (although the contemporary pronunciation of salt  would prevent this from happening), and likewise fault-fought-fort, pause-Paul's, Morden-Malden, water-Walter. Sometimes such pairs are kept apart, in more deliberate speech at least, by a kind of length difference: Morden vs. Malden.
- A preceding is also fully absorbed into vocalised . The reflexes of earlier and earlier are thus phonetically similar or identical; speakers are usually ready to treat them as the same phoneme. Thus awful can best be regarded as containing two occurrences of the same vowel, . The difference between musical and music-hall, in an H-dropping broad Cockney, is thus nothing more than a matter of stress and perhaps syllable boundaries.
- With the remaining vowels a vocalised is not absorbed, but remains phonetically present as a back vocoid in such a way that and are kept distinct.
- The clearest and best-established neutralisations are those of and . Thus rill, reel and real fall together in Cockney as ; while full and fool are and may rhyme with cruel . Before clear (i.e., prevocalic) the neutralisations do not usually apply, thus silly but ceiling-sealing, fully but fooling.
- In some broader types of Cockney, the neutralisation of before non-prevocalic may also involve, so that fall becomes homophonous with full and fool .
- The other pre- neutralisation which all investigators agree on is that of . Thus, Sal and sale can be merged as, fail and fowl as, and Val, vale-veil and vowel as . The typical pronunciation of railway is .
- According to Siversten, and can also join in this neutralisation. They may on the one hand neutralise with respect to one another, so that snarl and smile rhyme, both ending, and Child's Hill is in danger of being mistaken for Charles Hill; or they may go further into a fivefold neutralisation with the one just mentioned, so that pal, pale, foul, snarl and pile all end in . But these developments are evidently restricted to broad Cockney, not being found in London speech in general.
- A neutralisation discussed by Beaken (1971) and Bowyer (1973), but ignored by Siversten (1960), is that of . It leads to the possibility of doll, dole and dull becoming homophonous as or . Wells' impression is that the doll-dole neutralisation is rather widespread in London, but that involving dull less so.
- One further possible neutralisation in the environment of a following non-prevocalic is that of and, so that well and whirl become homophonous as .
- Cockney has been occasionally described as replacing with . For example, thwee (or fwee) instead of three, fwasty instead of frosty. Peter Wright, a Survey of English Dialects fieldworker, concluded that this was not a universal feature of Cockneys but that it was more common to hear this in the London area than anywhere else in Britain. This description may also be a result of mishearing the labiodental R as, when it is still a distinct phoneme in Cockney.
- An unstressed final -ow may be pronounced . In broad Cockney this can be lowered to . 
- Grammatical features:
- Use of me instead of my, for example, "At's me book you got 'ere". Cannot be used when "my" is emphasised (i.e., "At's my book you got 'ere" (and not "his")).
- Use of ain't
- Use of double negatives, for example "I didn't see nuffink."
Most of the features mentioned above have, in recent years, partly spread into more general south-eastern speech, giving the accent called Estuary English; an Estuary speaker will use some but not all of the Cockney sounds.   Some of the features may derive from the upper-class pronunciation of late 18th century London, such as the use of "ain't" for "isn't" and the now lost reversal of "v" and "w" (as noted by Dickens regarding Sam Weller/Veller).
Changing attitudes towards Cockney English
The Cockney accent has long been looked down upon and thought of as inferior by many. In 1909 these attitudes even received an official recognition thanks to the report of The Conference on the Teaching of English in London Elementary Schools issued by the London County Council, where it is stated that "[…] the Cockney mode of speech, with its unpleasant twang, is a moderncorruption without legitimate credentials, and is unworthy of being the speech of any person in the capital city of the Empire". On the other hand, however, there started rising at the same time cries in defence of Cockney as, for example the following one: "The London dialect is really, especially on the South side of the Thames, a perfectly legitimate and responsible child of the old kentish tongue […] the dialect of London North of the Thames has been shown to be one of the many varieties of the Midland or Mercian dialect, flavoured by the East Anglian variety of the same speech […]". Since then, the Cockney accent has been more accepted as an alternative form of the English Language rather than an 'inferior' one; in the 1950s the only accent to be heard on the BBC (except in trivial programmes such as Sooty) was RP, whereas nowadays many different accents, including Cockney or ones heavily influenced by it, can be heard on the BBC. In a survey of 2000 people conducted by Coolbrands in autumn 2008, Cockney was voted equal fourth coolest accent in Britain with 7% of the votes, while The Queen's English was considered the coolest, with 20% of the votes. Brummie was voted least popular, receiving just 2%. This shows that although speaking with a Cockney accent is not considered as bad as in the past, preference towards RP still prevails.
Spread of Cockney English
Studies have indicated that the heavy use of South East English accents on television and radio may be the cause of the spread of Cockney English since the 1960s.    Cockney is more and more influential and some claim that in the future many features of the accent may become standard.
Studies have indicated that working-class adolescents in areas such as Glasgow have begun to use certain aspects of Cockney and other Anglicisms in their speech, infiltrating the traditional Glasgow patter. For example, TH-fronting is commonly found, and typical Scottish features such as the postvocalic are reduced. Research suggests the use of English speech characteristics is likely to be a result of the influence of London and South East England accents featuring heavily on television.   
Th-fronting, L-vocalization and T glottalization can now be found in every county of England (with L-vocalization being largely absent from Northern England),     whereas before the 1960s the only Cockney feature that was common to all of England, except for much of East Anglia and North East England, was H-dropping.  
Notes and References
- Book: Oxford English Dictionary. Oxford University Press. 1989. Second. 2009-03-24.
- Book: Cumberledge, Geoffrey. The Poetical Works of Geoffrey Chaucer. F. N. Robinson. Oxford University Press. 70.
- Book: Cumberledge, Geoffrey. The Poetical Works of Geoffrey Chaucer. F. N. Robinson. Oxford University Press. 1063.
- Book: Hotten, John Camden. A dictionary of modern slang, cant and vulgar words. 22. Cockney. 1859. Cockney: a native of London. An ancient nickname implying effeminacy, used by the oldest English writers, and derived from the imaginary fool's paradise, or lubberland, Cockaygne.
- This cokneys and tytyllynges..[delicati pueri] may abide no sorrow when they come to age..In this great cytees as London, York, Perusy and such..the children be so nycely and wantonly brought up..that commonly they can little good (Robert Whittington, Vulgaria (1520))
- Web site: www.phrases.org.uk. www.phrases.org.uk. 2010-10-01.
- Web site: Bow Bells. London.lovesguide.com. 2010-10-01.
- http://www.london-walks.co.uk/29/cockney-bow-bells-st-mary.shtml www.london-walks.co.uk
- Web site: www.fromoldbooks.org. www.fromoldbooks.org. 2010-10-01.
- Web site: A classical dictionary of the vulgar tongue. Grose. Francis. Project Gutenberg e-text. gutenberg.org. 2009-03-24.
- Book: Oxford University Press. 2009. Second. 2006-07-03.
- " … I shall explain myself more particularly; only laying down this as a general and certain observation for the women to consider, viz. that most children's constututions are spoiled, or at least harmed, by cockering and tenderness."Book: Locke, John. Some thoughts concerning education. 1695. Third. 7.
- J. Swinnerton, The London Companion (Robson, 2004), p. 21.
- Web site: www.stmarylebow.co.uk. www.stmarylebow.co.uk. 2010-10-01.
- Web site: Fogarty. Philippa. Asia-Pacific | Recognition at last for Japan's Ainu. BBC News. 2008-06-06. 2010-10-01.
- http://www.phon.ucl.ac.uk/home/wells/blog0710a.htm4th October entry
- Web site: BBC News – Cockney to disappear from London 'within 30 years'. bbc.co.uk. 1 October 2010. 1 July 2010.
- Web site: British Library. Survey of English Dialects, Hackney, London. Sounds.bl.uk. 2009-03-10. 2010-10-01.
- Web site: British Library. British Library Archival Sound Recordings. Sounds.bl.uk. 2009-03-10. 2010-10-01.
- Web site: www.allwords.com. www.allwords.com. 2010-10-01.
- Web site: www.businessballs.com. www.businessballs.com. 2010-10-01.
- Web site: Cockney English. Ic.arizona.edu. 2010-10-01.
- Web site: Robert Beard. Linguistics 110 Linguistic Analysis: Sentences & Dialects, Lecture Number Twenty One: Regional English Dialects English Dialects of the World. Departments.bucknell.edu. 2010-10-01.
- → or a quality like that of cardinal 4, :
- is on occasion somewhat fronted and/or lightly rounded, giving Cockney variants such as, .
- has a fully back variant, qualitatively equivalent to cardinal 5, which Beaken (1971) claims characterizes "vigorous, informal" Cockney.
- Web site: Phonological change in spoken English. Bl.uk. 2007-03-12. 2010-10-01.
- This is common to most traditional, Southern English dialects except for those in the West Country.
- Web site: Rosewarne, David (1984). ''Estuary English''. Times Educational Supplement, 19 (October 1984). Phon.ucl.ac.uk. 1999-05-21. 2010-10-01.
- Web site: Wells, John (1994). ''Transcribing Estuary English – a discussion document''. Speech Hearing and Language: UCL Work in Progress, volume 8, 1994, pages 259-267. Phon.ucl.ac.uk. 2010-10-01.
- Web site: Altendorf, Ulrike (1999). ''Estuary English: is English going Cockney?'' In: Moderna Språk, XCIII, 1, 1-11. PDF. 2010-10-01.
- Web site: 5. PDF. 2010-10-01.
- Web site: BBC English. BBC English. 2010-10-01.
- News: RP still most popular accent. telegraph.co.uk. September 2008. 2009-03-18. London. Chris. Irvine.
- News: Soaps may be washing out accent – BBC Scotland. BBC News. 2004-03-04. 2010-10-01.
- http://www.timesonline.co.uk/tol/news/uk/article1036798.ece 'We fink, so we are from Glasgow'
- http://findarticles.com/p/articles/mi_qn4156/is_/ai_n16503073 Scots kids rabbitin' like Cockneys
- Book: Rogaliński, Paweł. British Accents: Cockney, RP, Estuary English. 2011. 15.
- http://www.esrcsocietytoday.ac.uk/ESRCInfoCentre/ViewAwardPage.aspx?AwardId=1892 Is TV a contributory factor in accent change in adolescents?
- http://pqasb.pqarchiver.com/smgpubs/access/571152461.html?did=571152461&FMT=ABS&FMTS=FT&date=Mar%2B4,%2B2004&author=&desc=Cockney%2Bcreep%2Bputs%2Bpaid%2Bto%2Bthe%2Bpatter Cockney creep puts paid to the patter
- Web site: ‘Talkin' Jockney’? Variation and change in Glaswegian accent1 – Stuart-Smith – 2007 – Journal of Sociolinguistics – Wiley Online Library. .interscience.wiley.com. 2007-04-17. 2010-10-01.
- Web site: British Library. Millennium Memory Bank, Chatham, Kent. Sounds.bl.uk. 2009-03-10. 2010-10-01.
- Web site: British Library. Millennium Memory Bank, Plymouth, Devon. Sounds.bl.uk. 2009-03-10. 2010-10-01.
- Web site: British Library. Millennium Memory Bank, Leeds, West Yorkshire. Sounds.bl.uk. 2009-03-10. 2010-10-01.
- Web site: British Library. Millennium Memory Bank, Withernsea, East Yorkshire. Sounds.bl.uk. 2009-03-10. 2010-10-01.
- Web site: British Library. Millennium Memory Bank, Appleby-in-Westmorland, Cumbria. Sounds.bl.uk. 2009-03-10. 2010-10-01.
- Web site: British Library. Survey of English Dialects, Gwinear, Cornwall. Sounds.bl.uk. 2009-03-10. 2010-10-01.
- Web site: British Library. Survey of English Dialects, Bolton, Lancashire. Sounds.bl.uk. 2009-03-10. 2010-10-01.
- Web site: British Library. Survey of English Dialects, Great Chesterford, Essex. Sounds.bl.uk. 2009-03-10. 2010-10-01.