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:
['197', 'q']
answer:
1, 7, 9


question:
['193', '195', '411', 'p', '161', 'j']
answer:
1, 3, 4, 5, 6, 9


question:
['493', 'l']
answer:

3, 4, 9