<P> After World War II, with many aircraft and ground personnel from the allied armed forces, "Able Baker" continued to be used for civil aviation . But many sounds were unique to English, so an alternative "Ana Brazil" alphabet was used in Latin America . But the International Air Transport Association (IATA), recognizing the need for a single universal alphabet, presented a draft alphabet to the ICAO during 1947 that had sounds common to English, French, Spanish and Portuguese . After further study and modification by each approving body, the revised alphabet was implemented on 1 November 1951 for civil aviation (but it may not have been adopted by any military): </P> <P> Alfa, Bravo, Coca, Delta, Echo, Foxtrot, Golf, Hotel, India, Juliett, Kilo, Lima, Metro, Nectar, Oscar, Papa, Quebec, Romeo, Sierra, Tango, Union, Victor, Whisky, Extra, Yankee, Zulu </P> <P> Problems were soon found with this list . Some users believed that they were so severe that they reverted to the old "Able Baker" alphabet . To identify the deficiencies of the new alphabet, testing was conducted among speakers from 31 nations, principally by the governments of the United Kingdom and the United States . Confusion among words like Delta, Nectar, Victor, and Extra, or the unintelligibility of other words during poor receiving conditions were the main problems . After much study, only the five words representing the letters C, M, N, U, and X were replaced . The ICAO sent a recording of the new Radiotelephony Spelling Alphabet to all member states in November 1955 . The final version given in the table above was implemented by the ICAO on 1 March 1956, and the ITU adopted it no later than 1959 when they mandated its usage via their official publication, Radio Regulations . Because the ITU governs all international radio communications, it was also adopted by all radio operators, whether military, civilian, or amateur . It was finally adopted by the IMO in 1965 . During 1947 the ITU adopted the compound number words (Nadazero, Unaone, etc .), later adopted by the IMO during 1965 . </P> <P> A spelling alphabet is used to spell parts of a message containing letters and numbers to avoid confusion, because many letters sound similar, for instance "n" and "m" or "f" and "s"; the potential for confusion increases if static or other interference is present . For instance the message "proceed to map grid DH98" could be transmitted as "proceed to map grid Delta - Hotel - Niner - Ait". Using "Delta" instead of "D" avoids confusion between "DH98" and "BH98" or "TH98". The unusual pronunciation of certain numbers was designed to reduce confusion . </P>

Is there a word that uses all the letters of the alphabet