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:
['175', 'c', 'c']
answer:
1, 5, 7


question:
['y', '101', 'g', 'c', 'z']
answer:
0, 1


question:
['229', 's', 'h', 'o', '199', '427', 'm', '361', 'v', 'f', 'w', 'l']
answer:

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