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: ['339', '473', '485']

A: 3, 4, 5, 7, 8, 9
****
Q: ['299', '371', '313', '17', 't', 'q']

A: 1, 2, 3, 7, 9
****
Q: ['i', 't']

A:
-1
****