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:
['447', '77', '337', 'i', '257', '477', 'l', 'm', '357', 'k', '293', '425', 's']
answer:
2, 3, 4, 5, 7, 9


question:
['u', '73', 'x', 'f', 'e', '187', 'x', 'i', '215', '1', 'z', '129', '89', 'f', 'i']
answer:
1, 2, 3, 5, 7, 8, 9


question:
['j', '281', 'h', 'n', '81', 'p', 'v', '249', '411', '323', '179', '353', '387', '229']
answer:

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