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:
['177', '323', 'q', 'e', 'x', 'p', '3', 'c', 'e', '23', 's', '407', 'l', '21', 'z']
answer:
0, 1, 2, 3, 4, 7


question:
['u', '207', 'q', '371', 's', '51', '217', 'q', '255', '9', '109', 'l', 'b', 'w']
answer:
0, 1, 2, 3, 5, 7, 9


question:
['243', '215', '5', 'u', 'v']
answer:

1, 2, 3, 4, 5