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.

Q: ['907', '2407', '1385', '3593', 'x', '4143', '2271', '8361', 'q', '5093', 'd', '257', 'm', 'a', '5751', '7845', '3925', '3517', '7753', 'e', '5803', '2629', 't', 'e', '845', '6157', '9787', '225', 'j', 'j', 'l', '1321', 'k', '2459', 'u', '9113', '3193', 'a', 'j', 't']

A: a, d, e, j, k, l, m, q, t, u, x
****
Q: ['e', 'z', '5199', 'x']

A: e, x, z
****
Q: ['d', 'z', 'v', '2525', '3005', '9719', 'p', 'i', '7841', 'n', '9863', '8629', 'k', '2707', '3879', 'h', 'j', '6631', 'r', '9395', 'r', 'r', '7557', '8581', 'n', '4939']

A:
d, h, i, j, k, n, p, r, v, z
****