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: ['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']

A: d, f, h, i, j, l, m, q, u, v, x
****
Q: ['8859', '575', 'l', 'e', '6575', '1303', '8643', '1395', '3171']

A: e, l
****
Q: ['6095', 's', '8385', 'v', '9369', '6751', 'i', 'h', 'q', 'm', 'f', 'y', 'g', 'f', '1115', '9021', '5869', 'x', '9273', 'i', '2853', 'n', '767', '3233', '9327', '7249']

A:
f, g, h, i, m, n, q, s, v, x, y
****