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:
['a', '491', '477', '193', 'b', 'l', 'c']
answer:
1, 3, 4, 7, 9


question:
['137', '383', 'o', 'z', '199', '329', 'l', 'j', 'p', '469', 'f', 'm', '371', '485']
answer:
1, 2, 3, 4, 5, 6, 7, 8, 9


question:
['459', '217', '491', '489', '319', 'o', 'o', 'w']
answer:

1, 2, 3, 4, 5, 7, 8, 9