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:['3295', '4591', '4143', '1037', '8921', '3193', 'o', 'h', 'm', '9075', '6505', 'r', 'h', 'u', 'z', '6101', '7845', 'i', 'e', 's', 't', '2711', '3473', '7097']
Solution:
e, h, i, m, o, r, s, t, u, z