Complete Detailed Grammar of the International Language Ido/Alphabet
1. The alphabet of the language contains 26 letters: five vowels, and twenty-one consonants.
The five vowels are a, e, i, o, u. The 21 consonants are b, c, d, f, g, h, j, k, l, m, n, p, q, r, s, t, v, w, x, y, z. It is highly recommended to write the letters in a manner that avoids confusion between the capital letters F and T or C, and I and J. In printing pay attention that Ido doesn't become Jdo. In general, and especially for addresses, take care to form the letters in the best and most readable manner.