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:
['117', '247', '49', '63']
answer:
1, 2, 3, 4, 6, 7, 9


question:
['r', 'f', 'l', 'a', 'c', '489', 'e', 'p', 'm', '175', 'l']
answer:
1, 4, 5, 7, 8, 9


question:
['177', '7', '237', 'j', '351', 'q', '71', 't', '183', 's', 'x', 'm', '45', 'p']
answer:

1, 2, 3, 4, 5, 7, 8