Over time names sometimes shifted or were added, as in double U for W, or "double V" in French, the English name for Y, and the American zee for Z.
ˌoʊvɚ tˈaɪm nˈeɪmz sˈʌmtaɪmz ʃˈɪftᵻd ɔːɹ wɜːɹ ˈædᵻd, æz ɪn dˈʌbəl jˈuː fɔːɹ dˈʌbəljˌuː, ɔːɹ "dˈʌbəl vˈiː" ɪn fɹˈɛntʃ, ðɪ ˈɪŋɡlɪʃ nˈeɪm fɔːɹ wˈaɪ, ænd ðɪ ɐmˈɛɹɪkən zˈiː fɔːɹ zˈiː.