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:
['t', 'r', 'z']

Ex Output:
-1


Ex Input:
['a', '55', 's', '71', '271', '211']

Ex Output:
1, 2, 5, 7


Ex Input:
['g', 'i']

Ex Output:

-1


