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:
['b', 'm', '471']

Ex Output:
1, 4, 7


Ex Input:
['211', 'v', 'a', '445', '185', '135', 'v', 'w', 'b', '155', '315', '1']

Ex Output:
1, 2, 3, 4, 5, 8


Ex Input:
['411', 'f', 'r', 'h', '7', '193', '497', 'v', '321']

Ex Output:

1, 2, 3, 4, 7, 9