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', 'r', 'e', 'b', '149', '361', 'i']
1, 3, 4, 6, 9

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

['349', 'y', 'd', '249', 'r', 'q', '39', 'r', '373', '367', '381', 'e', 's', '41', 'q']

1, 2, 3, 4, 6, 7, 8, 9