4. The vowels are named by their sounds, as given in (2). The names
of the consonants are "bo", "co", "cxo", "do", "fo", "go", "gxo",
"ho", "hxo", "jo", "jxo", "ko", "lo", "mo", "no", "po", "ro", "so",
"sxo", "to", "uxo", "vo", "zo". These are used in speaking of the
letters, in pronouncing them in abbreviations, as "ko to po" for
"k. t. p." (= etc.), and in spelling words, as "bo, i, ro, do, o,
birdo".