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]: ['k', '233', 'h', 'd', 's', '83', '149', 'p', 'm']
[A]: 1, 2, 3, 4, 8, 9


[Q]: ['k', 'b', 'k', 'l', '441', 'b', '115', 'd', 'b', 'r', '115', 'k', 'a']
[A]: 1, 4, 5


[Q]: ['j', 'o', 'h', 'l', 'r', '473', '285']
[A]:
2, 3, 4, 5, 7, 8