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:
['v', 'i', 'g', 'h']

Ex Output:
-1


Ex Input:
['299', '199']

Ex Output:
1, 2, 9


Ex Input:
['p', 'v']

Ex Output:

-1