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:
['91', '291', '379', 'k', 'a', 't', 'i', '355', 'l', '335', '119', '343']
answer:
1, 2, 3, 4, 5, 7, 9


question:
['279', 'm', '453', 's', 'x', 'g', 'i', 'x', 'd']
answer:
2, 3, 4, 5, 7, 9


question:
['b', '461', 'k', 'l', '155', 'z', 'j']
answer:

1, 4, 5, 6