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: ['a', 'y', '7401', 'e', 'l', '4351', 'p', '5673', 'k', '333', 'o', 'd', 'e', 'j', 'e', '9569', '1795', 'r', 'z', '6059', '4399', '2927', 'n', '9387', '9317', 'b', 'c', 'e']
Example Output: a, b, c, d, e, j, k, l, n, o, p, r, y, z

Example Input: ['a', 'p', 'y', 'l', 'l']
Example Output: a, l, p, y

Example Input: ['j', '5113', '8781', '4851', 'x', 'x', 's', 'k', '7139', '6399', '697', '5019', 'r', 'n', '8465', '5485', 'q', '173', 'a', '7651', 'm', '4463', 'o', 'y', 'p', '6181', '6283', 'e']
Example Output:
a, e, j, k, m, n, o, p, q, r, s, x, y