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]: ['445', '449']
[A]: 4, 5, 9


[Q]: ['t', 'p', 'u', 'a']
[A]: -1


[Q]: ['f', '215', 'b']
[A]:
1, 2, 5


