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:
['279', 't', 'e', 'j', '437', '167', 's', 'n']
answer:
1, 2, 3, 4, 6, 7, 9


question:
['99', '245', 'c', '435', '255', 'v']
answer:
2, 3, 4, 5, 9


question:
['191', 'z', 'n', 'n', '133', 's', '315', '223', '139', 'i', 'i', 'e', 'r', '115']
answer:

1, 2, 3, 5, 9