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:
['h', '477', 'w', '315', 'k', 'd', '367', '411', '207', 'b', '81', 'k', 'f', '107', '103']
answer:
0, 1, 2, 3, 4, 5, 6, 7, 8


question:
['51', '461', '343', '15', '209', '51']
answer:
0, 1, 2, 3, 4, 5, 6, 9


question:
['j', '317', '491', 'e', '379', '229', '303', '223', '457']
answer:

0, 1, 2, 3, 4, 5, 7, 9