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]: ['v', 'r', '67', '49']
[A]: 4, 6, 7, 9


[Q]: ['y', '101', 'g', 'c', 'z']
[A]: 0, 1


[Q]: ['v', '109', 'u', '439', '217', '307', 'c', '251', '283']
[A]:
0, 1, 2, 3, 4, 5, 7, 8, 9