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:
['173', 'i', 'w', '425', '27', 'd']
answer:
1, 2, 3, 4, 5, 7


question:
['255', 'u', 's', 'g', '445']
answer:
2, 4, 5


question:
['391', '25', 't', 'j', 'd', 'x', '485', 'c', '121', '119', '27']
answer:

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