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: ['5181', '8651', '963', '2111', 'g', '7913', '8335', 'o', '1387', '9225', '6517', 's', 'r', '2291', '3699', 'y', 'y', '4223', 'i', '9109', 'm', 's', '8585', 'l']
Example Output: g, i, l, m, o, r, s, y

Example Input: ['w', 'o', 'l', '5331', 'k', '9325', '6759', '7931', '8185', 'w', 'h', 'h', 'x', '4357', '6845', 'v', 'o', '8401', 'u', 'g', 'f', 'j', 'j', '2493', '4753', 'c', 'm', '1469', '4307', 'm', '2737', 'n', 'y']
Example Output: c, f, g, h, j, k, l, m, n, o, u, v, w, x, y

Example Input: ['j', '6155', '9727', 'l', '8199', '815', '7961', 'n', '7329', 'q', '3697', 'u', '1449', 't', '9757', 'x', '3641', '3989', 'z', '2891', 'h']
Example Output:
h, j, l, n, q, t, u, x, z