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:
['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:
['x', '325', 'i', 'n', 'i', 'w', 't']

Ex Output:
2, 3, 5


Ex Input:
['b', '411', '325', 'm', '25', '311', 'w', 'b', 'o', 's', 'b']

Ex Output:

1, 2, 3, 4, 5