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.

Q: ['z', 'z', '273']

A: 2, 3, 7
****
Q: ['a', '399', 's', 'e', '495', 'd', 'f', 'a', '323']

A: 2, 3, 4, 5, 9
****
Q: ['z', 'u', '377', 'y']

A:
3, 7
****