The English letter set has 26 letters, from A to Z. These letters incorporate both capitalised (A, B, C, etc.) and lowercase (a, b, c, etc.) shapes. Five of the letters (A, E, I, O, U) are vowels, and the remaining 21 are consonants, with W and Y some of the time considered as semi-vowels or coasts. Here's the list of the 26 letters:
a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, and z.