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]: ['u', '343', '167', 'a']
[A]: 1, 3, 4, 6, 7


[Q]: ['y', '449', 'g', '345', '167', 'q', 'k']
[A]: 1, 3, 4, 5, 6, 7, 9


[Q]: ['255', '337', 'h', 'g', '455', '145', '247', 'g', '361', 'w', '137', '15', '9', 'a', 's']
[A]:
1, 2, 3, 4, 5, 6, 7, 9