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:
['c', 'm', 'h', 'c', '69', '233', 'j', 'g', 'r', 'x', '59', 'p', '469']
answer:
2, 3, 4, 5, 6, 9


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


question:
['n', 'z', 'v', 'f', '403', '217', 'l', 'c']
answer:

0, 1, 2, 3, 4, 7