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:
['43', '479', '317', 'w', '475', '255', '3', 'x']
answer:
1, 2, 3, 4, 5, 7, 9


question:
['243', '1', 'j', 'e', '171', 'k', '177', '85', '367', 's', 't', '107', 'z', '283', '15']
answer:
0, 1, 2, 3, 4, 5, 6, 7, 8


question:
['417', 'l']
answer:

1, 4, 7