In this task, you are given an input list A comprising of numbers and alphabets. You need to extract and sort the unique alphabets in the list. The alphabets in the input list will only be in lowercase. Return -1 if there is no alphabet in the input list.

Example Input: ['5293', '2211', 'r', 'j', 'x', 'y', 'u', 'n', 'r', 'l', 'v', '113', 'v', 'e', '1323', '6291', 'a', '7417', 'j', '4175', 'd', '855', 'z', '1123']
Example Output: a, d, e, j, l, n, r, u, v, x, y, z

Example Input: ['9783', '3185', '8225', 'u', '1123', 'd', '3453', 'i', '7713', '8457', '8609', 'h', '2767', 'e', '7191', '2929', '1089', '393', 'e', 'd', '11', '9329', '683', '1271']
Example Output: d, e, h, i, u

Example Input: ['9951', 'u', 'r', '4863', 'x', 'w', 'w', '1325', 'm', 'p', '5105', 'c', '5351', 'c', 'c', 't', '7111', 's', '6203', 's', 'i', 'l', 'y']
Example Output:
c, i, l, m, p, r, s, t, u, w, x, y