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:
['w', 'b', 'w', 'm', 'j', 'd', 'q', '47', '221', 'b', '201', 'f']
answer:
0, 1, 2, 4, 7


question:
['93', 'h', 'd', 'z', '395', 'r', 'j', 'f', '323', '215', 'n', 's', '497']
answer:
1, 2, 3, 4, 5, 7, 9


question:
['q', '67']
answer:

6, 7