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:
['299', '371', '313', '17', 't', 'q']
answer:
1, 2, 3, 7, 9


question:
['s', 'y', '133', 'c', '415', 'p']
answer:
1, 3, 4, 5


question:
['d', 'y', '301', '309', 'x', '3', '47', '45', 'g', 'z', '15', 'i']
answer:

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