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:
['3', '181', 'o', '425', 'f', '391']
answer:
1, 2, 3, 4, 5, 8, 9


question:
['h', 'l', '43', 'b', 'g', '265', '355', 'y']
answer:
2, 3, 4, 5, 6


question:
['435', '183', 'w', 'c']
answer:

1, 3, 4, 5, 8