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:
['165', '219', 'r', 's', '191', 'k', '39']
answer:
1, 2, 3, 5, 6, 9


question:
['h', 'e', '151', 'p', '147', '33', '225', '349', '37', 'r', 'o']
answer:

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