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]: ['479', 's', 'g']
[A]: 4, 7, 9


[Q]: ['49', 'r', '179', 'h', 'q', 'h', 'w', '187', '427', 'x', 'r']
[A]: 1, 2, 4, 7, 8, 9


[Q]: ['315', '127', 'v', 'u', 'w', '197', 'k', 'b', '299', 't', 't', '417', 'h', 'a']
[A]:
1, 2, 3, 4, 5, 7, 9