<Tr> <Td> </Td> <Td> This article relies largely or entirely on a single source . Relevant discussion may be found on the talk page . Please help improve this article by introducing citations to additional sources . (February 2013) </Td> </Tr> <P> The officer ranks of the Royal Air Force, as they are today, were introduced in 1919 . Prior to that Army ranks were used . </P> <Table> <Tr> <Th> NATO code </Th> <Th_colspan="2"> OF - 10 </Th> <Th_colspan="2"> OF - 9 </Th> <Th_colspan="2"> OF - 8 </Th> <Th_colspan="2"> OF - 7 </Th> <Th_colspan="2"> OF - 6 </Th> <Th_colspan="2"> OF - 5 </Th> <Th_colspan="2"> OF - 4 </Th> <Th_colspan="2"> OF - 3 </Th> <Th_colspan="2"> OF - 2 </Th> <Th_colspan="6"> OF - 1 </Th> <Th_colspan="6"> OF (D) </Th> <Th_colspan="6"> Student officer </Th> </Tr> <Tr> <Th> United Kingdom (Edit) </Th> <Td_colspan="2"> </Td> <Td_colspan="2"> </Td> <Td_colspan="2"> </Td> <Td_colspan="2"> </Td> <Td_colspan="2"> </Td> <Td_colspan="2"> </Td> <Td_colspan="2"> </Td> <Td_colspan="2"> </Td> <Td_colspan="2"> </Td> <Td_colspan="3"> </Td> <Td_colspan="3"> </Td> <Td_colspan="6"> </Td> <Td_colspan="6"> No equivalent </Td> </Tr> <Tr> <Td_colspan="2"> Marshal of the RAF </Td> <Td_colspan="2"> Air Chief Marshal </Td> <Td_colspan="2"> Air Marshal </Td> <Td_colspan="2"> Air Vice-Marshal </Td> <Td_colspan="2"> Air Commodore </Td> <Td_colspan="2"> Group Captain </Td> <Td_colspan="2"> Wing Commander </Td> <Td_colspan="2"> Squadron Leader </Td> <Td_colspan="2"> Flight Lieutenant </Td> <Td_colspan="3"> Flying Officer </Td> <Td_colspan="3"> Pilot Officer / Acting Pilot Officer </Td> <Td_colspan="6"> Officer Cadet </Td> </Tr> <Tr> <Td> Abbreviation </Td> <Td_colspan="2"> MRAF </Td> <Td_colspan="2"> Air Chf Mshl </Td> <Td_colspan="2"> Air Mshl </Td> <Td_colspan="2"> AVM </Td> <Td_colspan="2"> Air Cdre </Td> <Td_colspan="2"> Gp Capt </Td> <Td_colspan="2"> Wg Cdr </Td> <Td_colspan="2"> Sqn Ldr </Td> <Td_colspan="2"> Flt Lt </Td> <Td_colspan="3"> Fg Off </Td> <Td_colspan="3"> Plt Off </Td> <Td_colspan="6"> Off Cdt </Td> <Td_colspan="6"> NA </Td> </Tr> <Tr> <Td_colspan="14"> <Ul> <Li> Currently honorary / wartime rank only . </Li> </Ul> </Td> </Tr> </Table> <Tr> <Th> NATO code </Th> <Th_colspan="2"> OF - 10 </Th> <Th_colspan="2"> OF - 9 </Th> <Th_colspan="2"> OF - 8 </Th> <Th_colspan="2"> OF - 7 </Th> <Th_colspan="2"> OF - 6 </Th> <Th_colspan="2"> OF - 5 </Th> <Th_colspan="2"> OF - 4 </Th> <Th_colspan="2"> OF - 3 </Th> <Th_colspan="2"> OF - 2 </Th> <Th_colspan="6"> OF - 1 </Th> <Th_colspan="6"> OF (D) </Th> <Th_colspan="6"> Student officer </Th> </Tr>

What are the ranks in the british air force
find me the text answering this question