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]: ['287', 'y', 'b', '79', '39', 'l']
[A]: 2, 3, 7, 8, 9


[Q]: ['p', 't', '211', 'r', '439', 'h', 'g', 'c', '299', '371']
[A]: 1, 2, 3, 4, 7, 9


[Q]: ['s', 's', 'y', '63', 'n', '477', '237', 'e', '423', '45', 'y', 'v', 'b', 'k', 'c']
[A]:
2, 3, 4, 5, 6, 7