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', 'r']
[A]: -1


[Q]: ['449', '427', 'g', '397', '439', 'f', 'b', 'z', 't', 'f', 's', '379', 'o']
[A]: 2, 3, 4, 7, 9


[Q]: ['n', 'j', 't']
[A]:
-1