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:
['487', '355', 'm', 's', '367', 'n', '203', 'x', 't', 'v', 'd', '251']
answer:
0, 1, 2, 3, 4, 5, 6, 7, 8


question:
['b', '343', '149', 'h', 'w', 'j', 'd', 'r', '461', 'q', '265', '329', '499', 'r', '291']
answer:
1, 2, 3, 4, 5, 6, 9


question:
['c', '155', '61']
answer:

1, 5, 6