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:
['v', '467', 'm', '23', '479', '49', 'k', 'u', 'l', '119']
answer:
1, 2, 3, 4, 6, 7, 9


question:
['293', '473', '79', 'j', '455', '285', 'k', 'd', '379', '249', '73', '229']
answer:
2, 3, 4, 5, 7, 8, 9


question:
['n', '3', 'e', 'w', '123', '381', 'i', 'r', 'j', 'k', '103', 'y', '55', '317']
answer:

0, 1, 2, 3, 5, 7, 8