instruction:
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.
question:
['291', '445', 'q', 't']
answer:
1, 2, 4, 5, 9


question:
['d', '335', '23', '461', '497', 'p', '313']
answer:
1, 2, 3, 4, 5, 6, 7, 9


question:
['199', 'w']
answer:

1, 9