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.

[EX Q]: ['4417', 'x', '4641', '885', '8485', 'd', '7057', '8519', 'm', 'i', 'l', '4627', '3069', 'v', '5011', 'u', '6673', 'h', '4541', 'j', '2337', '8175', '4797', 'f', '9109', 'q', 'q']
[EX A]: d, f, h, i, j, l, m, q, u, v, x

[EX Q]: ['r', 'y', 'c', '3211', '9245', '8459', '8521', '5781', 'w', 's', 'd', '5299', 'a', 'y', 'g', 'm', '6435', '8605', 'e', 'h', '6871', 's', '387', 'l', '5829', 'e', 'd', '9545', '2945', 'k', 'v', 't', '8449', '2199', 'm', '2599', '1489', '6623', 'x', 'l']
[EX A]: a, c, d, e, g, h, k, l, m, r, s, t, v, w, x, y

[EX Q]: ['u', '121', '5167', 'j', '4121', 'm', 'l', 's', '2627', '6581', '321', '9933', '591', 'y', 'm', '2639', '2011', '6583', '9125', '8087']
[EX A]:
j, l, m, s, u, y