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:
['f', '89', '63', '51', '465', 'u', 'd', '407', '399', '165', '343', 's', '79', 'l', 'u']
answer:
0, 1, 3, 4, 5, 6, 7, 8, 9


question:
['445', '449']
answer:
4, 5, 9


question:
['c', 'f', '453', '159', '481', '131', '317', 'c', '57', '195', '259', 'z', 'z']
answer:

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