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: ['k', '233', 'h', 'd', 's', '83', '149', 'p', 'm']

A: 1, 2, 3, 4, 8, 9
****
Q: ['487', 'x']

A: 4, 7, 8
****
Q: ['219', 'v', '295', '291', 'n', 'a', '133', 'a', 'y', 'i', 'e', '235', '461']

A:
1, 2, 3, 4, 5, 6, 9
****