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:
['o', 'f', 'm', 'w', 'w', 'y', 'b']

Ex Output:
-1


Ex Input:
['u', 'r']

Ex Output:
-1


Ex Input:
['j', 'r', 'v', 'd', '249', 's', '77', '359', '209', 'p', 'b', '221', '293', '397', 'f']

Ex Output:

0, 1, 2, 3, 4, 5, 7, 9