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:
['159', 's', 'z', '85', 't', 'g']
answer:
1, 5, 8, 9


question:
['473', '449', '357', 'p', 'p', 'e', '377', '77']
answer:
3, 4, 5, 7, 9


question:
['167', '391', '301', '381', 'p', 'l', '415', 'k', 'g']
answer:

0, 1, 3, 4, 5, 6, 7, 8, 9