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: ['d', '5285', 'z', 't', 'i', '719', 'z', 'b', '3603', '4781', 'o', 'g', 'j', 'd', 'r', 'a', 'x', '5829', '4907', '7395', '993', '2109', '1745', '415', '7525', '1029', '7791', '5321', 'h', '6391', 'g', '4613', '9191', 'o', '7365', '1811', '9695', 'w']

A: a, b, d, g, h, i, j, o, r, t, w, x, z
****
Q: ['5737', 'b', 'e', 't', '7419', 'n', 'y', '5225', '6485', 'b', '1343']

A: b, e, n, t, y
****
Q: ['n', '8771', '5457', '7367', 'm', 'k', '7737', '5841', 'b', 'y', '9523', '6497', '5163', '8087', '6161', '7863', '2963', '6731', 'i', '8449', '2893', 'z', '3593', 'h', '2909', 'd', '4871', '3821', 'v', 'v', '3207', 'i', '3945', 'p', '2765', '6539', '4383', 'k', '141', 'z', '3489', 'y', '2419', 'v', 'p']

A:
b, d, h, i, k, m, n, p, v, y, z
****