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:
['255', '19', '335', '483', 'r', 'c', 'r', 'o', '189', '71', '379', 'l', 'b']
answer:
1, 2, 3, 4, 5, 7, 8, 9


question:
['h', 'e', 'v']
answer:
-1


question:
['w', '19', '61', 'j', 'o', 's', 'q', '391', '281', '491', '287']
answer:

1, 2, 3, 4, 6, 7, 8, 9