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.

Example Input: ['c', '9125', '6049', '5201', 'v', '9311', 'q', '3305', 'l', 'q', '3387', '3647', 'x', '471', 'a', '5631', 't', '9679', '5423', '2569', 'w', 't', '6397', 'e', 'h', 'c', 'v', 'v']
Example Output: a, c, e, h, l, q, t, v, w, x

Example Input: ['8281', '4831', '1329', 'g', 'e', '8879', 'n', 's', 'x', 'j', '6305', 'j', '921', '3677', '5107', 'n', 'j', '9285', 'a', '5329', '6671', 'c', '9283', 'l', 'a', '7907', 'q', '7605', '855', '6477']
Example Output: a, c, e, g, j, l, n, q, s, x

Example Input: ['q', 'c', 'f', '8097', 'f', 'p', '1697', '7399', 'v', '9511', '157', '9963', '785', '3389', 'h', '6825', 'j', '425', 'c', 'z', '7663', 'q', 'e', 'p', '443', '7155', '5463']
Example Output:
c, e, f, h, j, p, q, v, z