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]: ['x', '325', 'i', 'n', 'i', 'w', 't']
[A]: 2, 3, 5


[Q]: ['345', 'k']
[A]: 3, 4, 5


[Q]: ['o', 't', 'i', '473', '325', '149', 's']
[A]:
1, 2, 3, 4, 5, 7, 9