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:
['449', '427', 'g', '397', '439', 'f', 'b', 'z', 't', 'f', 's', '379', 'o']
answer:
2, 3, 4, 7, 9


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


question:
['323', '481', '61', '267', 'h', '57']
answer:

1, 2, 3, 4, 5, 6, 7, 8