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]: ['f', '291', '145', 'd', 'z', '355', 'r']
[A]: 1, 2, 3, 4, 5, 9


[Q]: ['t', '437', 'o', 'w', 'x', 'e', 'r', 'r', '149', 'd', '391']
[A]: 1, 3, 4, 7, 9


[Q]: ['y', '281', 'c', 'u', 'i', 'v', 'e', 'i']
[A]:
1, 2, 8