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: ['q', 'g', 'z', '309']

A: 0, 3, 9
****
Q: ['l', 'n', '477', '227', '71', 'p', 'q', '277', '135', 'i']

A: 1, 2, 3, 4, 5, 7
****
Q: ['t', 'j', 'n', '211', '383', 'm', '121', 'r']

A:
1, 2, 3, 8
****