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.

['k', 'k', 'o', 'c', 'p', '301', 'o']
0, 1, 3

['i', '249', '287']
2, 4, 7, 8, 9

['t', 'y', '331']

1, 3