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:
['n', 'm', 'u', '267']
answer:
2, 6, 7


question:
['5', 'y', 'l', '311', '269', 'f', 'm', '25', 'j', 's', 't', '283', 'p']
answer:
1, 2, 3, 5, 6, 8, 9


question:
['j', 's', '327', 'g', 'g', '91', 'i', '471', 'q', '343', '375', '413']
answer:

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