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:
['117', '247', '49', '63']
answer:
1, 2, 3, 4, 6, 7, 9


question:
['z', 'v', 't', 'm', '51', 'e', 'l', 'l', '83', '301', '21', '347', 'm', '41', 'b']
answer:
0, 1, 2, 3, 4, 5, 7, 8


question:
['b', '433', 'x', '135', 'z', 'n', '439', '173', '195', '419', '307', 'n', '15', '417', '19']
answer:

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