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]: ['473', '449', '357', 'p', 'p', 'e', '377', '77']
[A]: 3, 4, 5, 7, 9


[Q]: ['143', 'i', '499', 't', '27']
[A]: 1, 2, 3, 4, 7, 9


[Q]: ['i', 'n', 'w', 'f', 'z']
[A]:
-1