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]: ['411', 'n']
[A]: 1, 4


[Q]: ['u', '343', '167', 'a']
[A]: 1, 3, 4, 6, 7


[Q]: ['141', 'o', 'u', '335', 'h', '197', 'e', 'h', 'b', 'z', 'y', '343', '167', 'x', 'x']
[A]:
1, 3, 4, 5, 6, 7, 9