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:
['229', '369', 'c', '7', 'f', 'h', '455', 't', '249', 's']
answer:
2, 3, 4, 5, 6, 7, 9


question:
['k', '409', '333', '283', 'm', '489', '377', '439', '443', 'r', '101', 'n', '35']
answer:
0, 1, 2, 3, 4, 5, 7, 8, 9


question:
['159', 's', 'z', '85', 't', 'g']
answer:

1, 5, 8, 9