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:
['e', 's', '271', 'k', 'e', 'y', '89']
answer:
1, 2, 7, 8, 9


question:
['y', 'l', 'g', 'w', '13', 'd', '123', '279', '293', 'n', '341', 'n', '359', '35', 'd']
answer:
1, 2, 3, 4, 5, 7, 9


question:
['49', 'j', '443', 'y', '431', 'e', '355', '107', '477', 'x']
answer:

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