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:
['375', '457', '423', 'q', 't']
answer:
2, 3, 4, 5, 7


question:
['287', 'y', 'b', '79', '39', 'l']
answer:
2, 3, 7, 8, 9


question:
['x', '179', '53', 'j', 'u']
answer:

1, 3, 5, 7, 9