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: ['119', '189', 'k', 'e', '425', '21', '245']

A: 1, 2, 4, 5, 8, 9
****
Q: ['3', '181', 'o', '425', 'f', '391']

A: 1, 2, 3, 4, 5, 8, 9
****
Q: ['f', 'e', 'q', '465', '65', 'r', 'p', 't', 'n', '57', 'k']

A:
4, 5, 6, 7
****