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', '217']
[A]: 1, 2, 7


[Q]: ['43', 'd']
[A]: 3, 4


[Q]: ['311', 'u', '165', '27', 'g', 'b', 'u', '17']
[A]:
1, 2, 3, 5, 6, 7