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]: ['473', '449', '357', 'p', 'p', 'e', '377', '77']
[A]: 3, 4, 5, 7, 9


[Q]: ['c', '317', 'z', 'z', 'h', '227', '439', 'x', 'f']
[A]: 1, 2, 3, 4, 7, 9


[Q]: ['c', '105', '457', 'z', 'h', 'w', 'v', 'c', 'a', 'k']
[A]:
0, 1, 4, 5, 7