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]: ['l', 'n', '477', '227', '71', 'p', 'q', '277', '135', 'i']
[A]: 1, 2, 3, 4, 5, 7


[Q]: ['3', '181', 'o', '425', 'f', '391']
[A]: 1, 2, 3, 4, 5, 8, 9


[Q]: ['n', 'v']
[A]:
-1