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:
['y', 'x', 'z', '153', '93', 't', '85', '337', '333', 'i', '53', '245', '353', 'm', 'a']
answer:
1, 2, 3, 4, 5, 7, 8, 9


question:
['t', '419', 'f']
answer:
1, 4, 9


question:
['y', '163', 'm']
answer:

1, 3, 6


