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.

['159', '3', 'f', 'k', 'o', 'm']
1, 3, 5, 9

['i', 'f', 'g', '267', '113', '93', 'r', '401', 'g', 'e']
0, 1, 2, 3, 4, 6, 7, 9

['349', 'x', 'z', 't', 'h', 'w', '263', '491', '419', '25', 's', '449']

1, 2, 3, 4, 5, 6, 9

