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]: ['i', '249', '287']
[A]: 2, 4, 7, 8, 9


[Q]: ['87', '139', 'y', '129', '255', '227', '103', 'j']
[A]: 0, 1, 2, 3, 5, 7, 8, 9


[Q]: ['447', '77', '337', 'i', '257', '477', 'l', 'm', '357', 'k', '293', '425', 's']
[A]:
2, 3, 4, 5, 7, 9