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:
['a', 'n', '423', 'y', 'y', 'u', '55', 'y', '295', '73', 't', 'p']

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


Ex Input:
['157', 'k', 'o', 'a', '279', 'g']

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


Ex Input:
['227', 'i']

Ex Output:

2, 7