The Haitian Creole Alphabet

The Haitian Creole alphabet has 30 letters:
a, an, b, ch, d, e, è, en,
f, g, h, i, j, k, l, m,
n, o, ò, on, ou, p,
r, s, t, ui, v, w, y, z.

We can divide those letters in two groups: 17 consonants and 13 vowels: and the vowels can be subdivided in three other groups: 7 oral vowels, 4 nasal vowels and 3 semi-vowels.