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:
['437', '377']
answer:
3, 4, 7


question:
['313', 'q', '355', 'y', 'b', '267', 'd', '253', '393', '409']
answer:
0, 1, 2, 3, 4, 5, 6, 7, 9


question:
['249', 'h', 'r', 'z', '319']
answer:

1, 2, 3, 4, 9