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: ['q', '8149', '4087', '5183', 't', 'j', 'e', 'g', 'r', '2125', 'y', 'l', 'g', '3673', 's', 'r', 'e', 'v', '4259', 'v', '3477', '9353', '3639', 'v', 'n', 'e', 'z', '5071', 'x', '6287', 'e', 'e']

A: e, g, j, l, n, q, r, s, t, v, x, y, z
****
Q: ['m', '3809', 'l', 'k', '1929', '7963', 'n', 'u', '2125', 'g', 'o', '8325', 'o', 'h', 'y', '3025', 'e', 'e', 'c', 'x', '8445', '4979', 'z', 'f', '4201', '4765', 'g']

A: c, e, f, g, h, k, l, m, n, o, u, x, y, z
****
Q: ['9529', 'd', 'j', 'y', '8505', 'c', 'i', 'e', 'o', '5847', '5765', 'x', 'l', 'b', 'n', 'b', '3903', 'c', '2051', '3949']

A:
b, c, d, e, i, j, l, n, o, x, y
****