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: ['415', '365', '373', 't', 'n']

A: 1, 3, 4, 5, 6, 7
****
Q: ['149', 'o', '237', 't', 'k', 'w']

A: 1, 2, 3, 4, 7, 9
****
Q: ['275', 'o']

A:
2, 5, 7
****