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.

['c', '317', 'z', 'z', 'h', '227', '439', 'x', 'f']
1, 2, 3, 4, 7, 9

['221', '191', 'w', 'l', 'h', 'a']
1, 2, 9

['z', 'r', '297', '493', 'v', 'n']

2, 3, 4, 7, 9