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:
['y', '101', 'g', 'c', 'z']

Ex Output:
0, 1


Ex Input:
['r', '171', 'p', '299', 'u', 'n', '421', '331', 'h', '21', 'h', 'x', '435', '327', '373']

Ex Output:
1, 2, 3, 4, 5, 7, 9


Ex Input:
['439', 'q', 'l', 'w', '497', 'p']

Ex Output:

3, 4, 7, 9