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:
['h', '475', 'x', '53', '461', 'c']
answer:
1, 3, 4, 5, 6, 7


question:
['o', 'f', 'm', 'w', 'w', 'y', 'b']
answer:
-1


question:
['363', '273', 'e', '387', 'r', 'w', 'x', 't', 's', '185']
answer:

1, 2, 3, 5, 6, 7, 8