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]: ['279', 't', 'e', 'j', '437', '167', 's', 'n']
[A]: 1, 2, 3, 4, 6, 7, 9


[Q]: ['271', '9', 'v', '93', 'f', 'd']
[A]: 1, 2, 3, 7, 9


[Q]: ['l', 'i', 'k', '465', 'm', 's', 'v', '153', 'x']
[A]:
1, 3, 4, 5, 6