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:
['359', '233', '455', '449', 'h']
answer:
2, 3, 4, 5, 9


question:
['461', 'u', 't']
answer:
1, 4, 6


question:
['281', '3']
answer:

1, 2, 3, 8