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:
['167', '229', '439', '389', '483', '207']
answer:
0, 1, 2, 3, 4, 6, 7, 8, 9


question:
['y', 'x', 'z', '153', '93', 't', '85', '337', '333', 'i', '53', '245', '353', 'm', 'a']
answer:
1, 2, 3, 4, 5, 7, 8, 9


question:
['231', 'o', 'y', '207', 'g', '113', '161', 'n', '337', 'b', 'c', 'w', '139', 'q']
answer:

0, 1, 2, 3, 6, 7, 9