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]: ['397', 'x', 'e', '179', '105', '381']
[A]: 0, 1, 3, 5, 7, 8, 9


[Q]: ['z', 'l', 's', '249', 'e', 'h', 'l']
[A]: 2, 4, 9


[Q]: ['u', 'z', 'r', '495']
[A]:
4, 5, 9