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]: ['j', '195', 'u', '55']
[A]: 1, 5, 9


[Q]: ['421', '99', '115', 'x']
[A]: 1, 2, 4, 5, 9


[Q]: ['a', '141', 'a', 'j', '243', 'e', '67', 'm', 'g', 'g', 'u', 'q', 'j']
[A]:
1, 2, 3, 4, 6, 7