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:
['165', '219', 'r', 's', '191', 'k', '39']
answer:
1, 2, 3, 5, 6, 9


question:
['85', '101', 'j', 'g', 'o', 'f', 'w', 'o', 'm', '45', 'e', 'z']
answer:
0, 1, 4, 5, 8


question:
['109', 'b']
answer:

0, 1, 9