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:
['131', '483', 'k', '387', '451', 'j']
answer:
1, 3, 4, 5, 7, 8


question:
['43', 'f', '449', 't', 'z', 'q', '259', 's', 'n', 'h', '123', 'z']
answer:
1, 2, 3, 4, 5, 9


question:
['e', 'a']
answer:

-1