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.

[Q]: ['k', '135', '297']
[A]: 1, 2, 3, 5, 7, 9


[Q]: ['93', '277', '373', 'z', '9', 'r', '251', '207', 'v', 'n']
[A]: 0, 1, 2, 3, 5, 7, 9


[Q]: ['s', '81']
[A]:
1, 8