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:
['r', 'u', '83', 'x', '155', '89', 'c', '391', '41', 'o', 'i', '161']
answer:
1, 3, 4, 5, 6, 8, 9


question:
['479', 's', 'g']
answer:
4, 7, 9


question:
['129', '243', '11', '105', 'l', '413', 'z', 'f', '495', '285', 'g']
answer:

0, 1, 2, 3, 4, 5, 8, 9