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.

['p', 't', '211', 'r', '439', 'h', 'g', 'c', '299', '371']
1, 2, 3, 4, 7, 9

['g', 't', '31', 't', 's']
1, 3

['445', '317', 'x', '3', '437', 'o', 'p', 'l', 'e', '387', '21', '293']

1, 2, 3, 4, 5, 7, 8, 9