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:
['229', '369', 'c', '7', 'f', 'h', '455', 't', '249', 's']
answer:
2, 3, 4, 5, 6, 7, 9


question:
['l', '283', '171', 'q', '465', 'u', '325', 'd', 'j', '349', '351', '229', 'z']
answer:
1, 2, 3, 4, 5, 6, 7, 8, 9


question:
['d', 'h', 'w', '27', 'l', 'd', '455', 'z']
answer:

2, 4, 5, 7