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.

['99', '245', 'c', '435', '255', 'v']
2, 3, 4, 5, 9

['39', '461', '163', '379', '331', '137', 'g', 'm']
1, 3, 4, 6, 7, 9

['a', 'x', '19']

1, 9