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:
['71', '7', '341', '199', 'z', 'x', '201']
answer:
0, 1, 2, 3, 4, 7, 9


question:
['127', 'd', '479', 'v', '213', 'm', 'z', '151', 'h', '455']
answer:
1, 2, 3, 4, 5, 7, 9


question:
['389', 'f', 'd', 't', '293', '183']
answer:

1, 2, 3, 8, 9