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


question:
['o', 'f', 'x', '239']
answer:
2, 3, 9


question:
['p', 'p', '439', 'o', 'c', '331', '347', '217', '393', 'j']
answer:

1, 2, 3, 4, 7, 9