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:
['j', 't']
answer:
-1


question:
['181', 'n', 'p', '349', '321', '457', 'h', 's', 't', 'k', 'x', 'a', '145', '135', 'u']
answer:
1, 2, 3, 4, 5, 7, 8, 9


question:
['t', '41', 'e', '257', 'w']
answer:

1, 2, 4, 5, 7