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: ['4269', '1847', '2025', '601', 'g', 'n', 'h', '3499', '4977', '3579', '9355', '3489', 'm', 'm', '4401', '4605', 'l', '3977', 'h', 'd', 't', '5135', '7787', 'k', 'q', '7699', '5325', '6269', '1865', 'h', '8915', '5677', 'g', '603', '1435']

A: d, g, h, k, l, m, n, q, t
****
Q: ['t', 'c', 'r', '4459', 'o', '1407', 'x', '1515', '331', 'm', '1535', 'p', 'u', 'g', '2513', 'o', '7827', '8149', 'd', 'z', 'q', '5655', 'x', '9997', '2809', 'g', 'h', '6309', 'a', 'j', '9773', '2115', 't', '9113', 'q', 'o', '427', 's', '3815', '5423', 's', 'n', 'i', 'o', '3643']

A: a, c, d, g, h, i, j, m, n, o, p, q, r, s, t, u, x, z
****
Q: ['7711', 'l', 'i', '1545', 'j', 'x', '6697', '9411', 'p', '2733', 'l', '2631', '1313', 'g', '2459', '1085', 's', 'n', 'x', '3565', '3695', 'q', '6767', 'f', '4251', 'n', 'e', '8515', 'v', '1259', 'd', '2653', '7055', '7391', '9257', 'e', '8585', '8981', 'w', '4449', '773']

A:
d, e, f, g, i, j, l, n, p, q, s, v, w, x
****