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:['f', 'e', 'j', '5277', '2047', 'o', '7093', 'd', '1169', '4787', '4451', 'i', 'd', '2889', '9599', 'o', 'b', 'j', '4365', '9049', 'a', '2025', '6715', '9787', '619', 'b', '3769', 'v', 'j']
Solution:
a, b, d, e, f, i, j, o, v