NATO phonetic alphabet
The pronunciation of some digits is different from English. 0 may be stressed on both syllables. 3 and 000 are pronounced like "tree" and "tousand", since the English "th" sound is difficult for many people. 4 is given its old pronunciation with two syllables: "fower" (rhymes with "lower"), to avoid confusion with the word "for". 5 is pronounced like "fife" to avoid confusion with "fire". The digit 9 is pronounced "niner" (rhymes with "finer") to avoid confusion with the German word "nein" ("no").