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:
['247', 's', 'y', 'c', '421']

Ex Output:
1, 2, 4, 7


Ex Input:
['u', 'z', 'p', '99', 'b']

Ex Output:
9


Ex Input:
['l', '155', '131', 'q', 't', '115']

Ex Output:

1, 3, 5