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: ['o', 'f', 'x', '239']

A: 2, 3, 9
****
Q: ['y', '449', 'g', '345', '167', 'q', 'k']

A: 1, 3, 4, 5, 6, 7, 9
****
Q: ['o', '67', 'v']

A:
6, 7
****