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.

['51', '461', '343', '15', '209', '51']
0, 1, 2, 3, 4, 5, 6, 9

['87', '139', 'y', '129', '255', '227', '103', 'j']
0, 1, 2, 3, 5, 7, 8, 9

['t', '61']

1, 6