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:
['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:
['475', '19', 'k', '307', '417']
answer:
0, 1, 3, 4, 5, 7, 9


question:
['u', '135', 'g', 'a', 'x', '239']
answer:

1, 2, 3, 5, 9