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:
['w', 'b', 'w', 'm', 'j', 'd', 'q', '47', '221', 'b', '201', 'f']
answer:
0, 1, 2, 4, 7


question:
['69', '307', 'l', 'j', '167', 'o', '427', 'j']
answer:
0, 1, 2, 3, 4, 6, 7, 9


question:
['l', 'k', 'r']
answer:

-1