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.

[EX Q]: ['455', '447', 'x', '479', 'b', '267', '339', '29', '267']
[EX A]: 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['y', '449', 'g', '345', '167', 'q', 'k']
[EX A]: 1, 3, 4, 5, 6, 7, 9

[EX Q]: ['195', '279', 'k', 'j', '215', '239', 'r']
[EX A]:
1, 2, 3, 5, 7, 9