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]: ['e', '307', '191', 'k', 'o', 'j', '99']
[A]: 0, 1, 3, 7, 9


[Q]: ['v', 'j', 'l', 'f', 'n', '185', 'x', '367']
[A]: 1, 3, 5, 6, 7, 8


[Q]: ['a', '373', '421', '173', 'q']
[A]:
1, 2, 3, 4, 7