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:
['311', '147', 'a', '149', 'h']
answer:
1, 3, 4, 7, 9


question:
['397', 'x', 'e', '179', '105', '381']
answer:
0, 1, 3, 5, 7, 8, 9


question:
['171', '377', '477', 'm', '447', '69', '9', '51', '405', '263', 'j', 'w']
answer:

0, 1, 2, 3, 4, 5, 6, 7, 9