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.

Ex Input:
['51', '461', '343', '15', '209', '51']

Ex Output:
0, 1, 2, 3, 4, 5, 6, 9


Ex Input:
['71', 't', '267', 'x', 'l', '95', '439', '51', 'i', '497', '469', 'k', '341', 'y']

Ex Output:
1, 2, 3, 4, 5, 6, 7, 9


Ex Input:
['177', '91', '101', '207', '63', '55', '83', 'u']

Ex Output:

0, 1, 2, 3, 5, 6, 7, 8, 9