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:
['185', '425']
answer:
1, 2, 4, 5, 8


question:
['411', '367']
answer:
1, 3, 4, 6, 7


question:
['o', '387', 't', '215', 'v', '51', '291', '115', 'a', 'b', 's', '483', 'n', 'r', '469']
answer:

1, 2, 3, 4, 5, 6, 7, 8, 9