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]: ['345', 'k']
[A]: 3, 4, 5


[Q]: ['177', '323', 'q', 'e', 'x', 'p', '3', 'c', 'e', '23', 's', '407', 'l', '21', 'z']
[A]: 0, 1, 2, 3, 4, 7


[Q]: ['z', '121', 'l', 'v', 'u']
[A]:
1, 2