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:
['e', 's', '153', 'e', '377', 'c', 'v', '437']
answer:
1, 3, 4, 5, 7


question:
['y', 'b']
answer:
-1


question:
['223', '71']
answer:

1, 2, 3, 7