Detailed Instructions: 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.
Problem:['d', '3033', '5111', '9657', '899', '3717', '3231', '9849', '1065', '3493', '6111', '4435', '1565', '5363', '3463', 'j', '6885', '2331', '4683', 'c', '9419', '9727', 'z', '5985', '1957', '8585', '5299']
Solution:
c, d, j, z