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]: ['q', 'p', 'y', 'p', 'k', 'r', '481', 'v']
[A]: 1, 4, 8


[Q]: ['69', '307', 'l', 'j', '167', 'o', '427', 'j']
[A]: 0, 1, 2, 3, 4, 6, 7, 9


[Q]: ['67', '233', '131', '415', 'r', '413', 'q', '21']
[A]:
1, 2, 3, 4, 5, 6, 7