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: ['z', 'e', 'c']

A: -1
****
Q: ['j', 'k']

A: -1
****
Q: ['25', 'y', 'i', '27', 'c', '385', '237', 'r', 'x', '347']

A:
2, 3, 4, 5, 7, 8
****