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:
['229', '369', 'c', '7', 'f', 'h', '455', 't', '249', 's']
answer:
2, 3, 4, 5, 6, 7, 9


question:
['q', 'z', 'x', '259', '147']
answer:

1, 2, 4, 5, 7, 9