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:
['187', '461', 'b']
answer:
1, 4, 6, 7, 8


question:
['61', '255', 'u', '219', '197', 'i', '453', 'i', '267', '217', 'o', 'g']
answer:
1, 2, 3, 4, 5, 6, 7, 9


question:
['v', 'y', 'd', '35', 'k', '53', '129', '149', 'x', 'g', 'e', '415']
answer:

1, 2, 3, 4, 5, 9