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]: ['c', 'u', 'b', '347', '191']
[A]: 1, 3, 4, 7, 9


[Q]: ['205', '347', '423', 'm', '363', 'u', 'g']
[A]: 0, 2, 3, 4, 5, 6, 7


[Q]: ['219', '127', '449', 'u', 'g']
[A]:
1, 2, 4, 7, 9