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:
['t', 'u', 'e', 'a', '369', 'e', 'r', 'm']
answer:
3, 6, 9


question:
['163', '291', 'm', 'z', '99', 'd', '365', 'm', '89', 's', 'e', 'q', 's', '161']
answer:
1, 2, 3, 5, 6, 8, 9


question:
['r', '31']
answer:

1, 3