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.

['207', '7083', 'q', '1611', '6193', 'a', '5765', 'q', '3833', '2247', '8617', 'j', '5167']
a, j, q