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:
['243', 't', '249', 'q', '459', '469', '301', 'j', '215', '21']
answer:
0, 1, 2, 3, 4, 5, 6, 9


question:
['e', '313', '259', 'i', 'h']
answer:
1, 2, 3, 5, 9


question:
['g', '65', '19', 'g', 'i', '83', '235', 'v', 'a', 'e', 'v', 'p']
answer:

1, 2, 3, 5, 6, 8, 9