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: ['193', '195', '411', 'p', '161', 'j']

A: 1, 3, 4, 5, 6, 9
****
Q: ['411', 'n']

A: 1, 4
****
Q: ['q', '391', '293', '279', '383', '393', 'z', '473', 'c', 'q']

A:
1, 2, 3, 4, 7, 8, 9
****