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:
['101', '473', '25', 'i', '117']

Ex Output:
0, 1, 2, 3, 4, 5, 7


Ex Input:
['m', 'e', 'g']

Ex Output:
-1


Ex Input:
['t', 'f', '417', 'c']

Ex Output:

1, 4, 7