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:
['93', '277', '373', 'z', '9', 'r', '251', '207', 'v', 'n']
answer:
0, 1, 2, 3, 5, 7, 9


question:
['c', 'w', '367', '43', '399', '303', '73']
answer:

0, 3, 4, 6, 7, 9