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', 'k']
[A]: -1


[Q]: ['t', '211', 'h', '99']
[A]: 1, 2, 9


[Q]: ['y', 'v', '231', 'i', 'p', 'w', 't']
[A]:
1, 2, 3


