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:
['i', 'f', '109']
answer:
0, 1, 9


question:
['361', '47', 'k', '33']
answer:
1, 3, 4, 6, 7


question:
['129', '149', 'f', 'r', 'y', '327', '361', 'j', '59', 'i', 'd', 'f', '175']
answer:

1, 2, 3, 4, 5, 6, 7, 9