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.

['197', 'q']
1, 7, 9

['49', 'r', '179', 'h', 'q', 'h', 'w', '187', '427', 'x', 'r']
1, 2, 4, 7, 8, 9

['b', 'q', '213']

1, 2, 3