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', '325', '377', 'v', '35', 'n', '125', '195']
answer:
1, 2, 3, 5, 7, 9


question:
['271', '9', 'v', '93', 'f', 'd']
answer:
1, 2, 3, 7, 9


question:
['423', '11', '395', 'r', '445']
answer:

1, 2, 3, 4, 5, 9


