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:
['381', '129']
answer:
1, 2, 3, 8, 9


question:
['493', '241', '239', 'g', 'q', '319', '49', '245']
answer:
1, 2, 3, 4, 5, 9


question:
['k', '145', '133', 'f']
answer:

1, 3, 4, 5