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 Input:
['219', '127', '449', 'u', 'g']

Ex Output:
1, 2, 4, 7, 9


Ex Input:
['w', 'p', 'r', 'v', 'd']

Ex Output:
-1


Ex Input:
['95', '427', '349']

Ex Output:

2, 3, 4, 5, 7, 9