Definition: In this task, you are given an input list A. You need to extract and sort the unique digits used in the list in ascending order. Return -1 if there is no digit in the list.
Input: ['229', '369', 'c', '7', 'f', 'h', '455', 't', '249', 's']

2, 3, 4, 5, 6, 7, 9