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:
['x', '493', 'x', '211', 'n', '143', '277', '191']
answer:
1, 2, 3, 4, 7, 9


question:
['f', 'u', '349', '275', 'm', '41', '283', 'z', 'd', 'a', 'd', '319', '135']
answer:
1, 2, 3, 4, 5, 7, 8, 9


question:
['15', '69', '321', 'a', '465', '299', 'v', '325']
answer:

1, 2, 3, 4, 5, 6, 9