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:
['i', 'f', '109']
answer:
0, 1, 9


question:
['73', '199', '189', '27', 'm', '101', '61', '113', 'y', '169']
answer:
0, 1, 2, 3, 6, 7, 8, 9


question:
['25', 'n', 'b']
answer:

2, 5