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: ['w', 'o', 'l', '1857', 's', 'q', 'j', 'e', '5945', 'g', 'l', '9563', 'e', 'u', '7633', '7977', '4943', 'y', '5621', 'f', '1653', 'c', 'l', '2843', '2125', '7731', '5257', '5667', 'b', 'b', '5765', 'a', 't', '8163', '9785', '5385']
Example Output: a, b, c, e, f, g, j, l, o, q, s, t, u, w, y

Example Input: ['7109', '1243', 'f', 'z', 'h', 'd', '6169', 'v', 'h', '3609', '3181', 'd', '3661', '7193', '7341', '9127', 'r', '1623', '5813', 's', 'd', '4011', '4983', 'n', '4195']
Example Output: d, f, h, n, r, s, v, z

Example Input: ['b', '9455', 'n', '7261', '4343', '2875', 'y', '9727', 'b', '1361', '1723', 'p', 'w', 'q', 'o', '4119', 'o', 'e', '1815', 'b', 'g', 'v', '8659', 'u', '5495', '829', '8133', 'p', 'e', '505', '8369', 'o', '6881', '6935', '8561', '3489', 't', 'n', '8895', '4903', '1675', '2191', 't']
Example Output:
b, e, g, n, o, p, q, t, u, v, w, y