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: ['51', '461', '343', '15', '209', '51']

A: 0, 1, 2, 3, 4, 5, 6, 9
****
Q: ['219', 'v', '295', '291', 'n', 'a', '133', 'a', 'y', 'i', 'e', '235', '461']

A: 1, 2, 3, 4, 5, 6, 9
****
Q: ['c', 'j', 'g']

A:
-1
****