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.

['7', 'n', '443', '131', '189', '187', '261', '451', '449', 'o', 'i', 't', '15']
1, 2, 3, 4, 5, 6, 7, 8, 9

['k', '135', '297']
1, 2, 3, 5, 7, 9

['l', 'f', 'u', 'c', '461', '27', 'e', 'e', 'f', 'q', '1', '445']

1, 2, 4, 5, 6, 7