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]: ['3223', 'h', 'w', 'f', 'y', '1667', '8843', '8759', '9203', '3305', '3549', '5507', '6251', 't', '8319', '9121', '6643', 'u', '4273', '4429', '7543', '7909', '789', '9183', '5729', 'd', '7063', 'b', '6677', 'w', 'x', 'x', 'z', '769', 'p', 'd', 'h']
[A]: b, d, f, h, p, t, u, w, x, y, z


[Q]: ['5499', 'm', '327', 'h', '5765', '4231', 'y', 'g', 's', '883', '9843', '2751', '8967', 'z', '2301', 'l', 'l', 'k', '7843', '7221', '3643', 'k', '5951', 'r', '9441', '235', '3835', 'l', 'e', 'y', '4061', 'l', '1177']
[A]: e, g, h, k, l, m, r, s, y, z


[Q]: ['q', '9043', '4899', '8013', '1163', 'b', 'q', '5765', '3611', 'l', '9293', '5613', '7637', 'h', 'm', '685', 'y', 'y', '6023', '2721', '6607', 'd', '9263', 'k', '5627', 'i', '1635', '2283', '6619', '8881', '7465', 'o', '4673', '6827', '1545', '7647', '3153']
[A]:
b, d, h, i, k, l, m, o, q, y