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:
['451', 'd', '429', '23', '143', '223', 'm', '51']
answer:
1, 2, 3, 4, 5, 9


question:
['311', '147', 'a', '149', 'h']
answer:
1, 3, 4, 7, 9


question:
['471', '333', '389', '281', '327']
answer:

1, 2, 3, 4, 7, 8, 9