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:
['219', 'v', '295', '291', 'n', 'a', '133', 'a', 'y', 'i', 'e', '235', '461']
answer:
1, 2, 3, 4, 5, 6, 9


question:
['159', 's', 'z', '85', 't', 'g']
answer:
1, 5, 8, 9


question:
['473', '499', 'n', '141', '277', 's']
answer:

1, 2, 3, 4, 7, 9