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: ['257', '111', 'g', '277', '473', '105', 'x', '217']

A: 0, 1, 2, 3, 4, 5, 7
****
Q: ['479', 's', 'g']

A: 4, 7, 9
****
Q: ['185', 'i', 'h', 'o', 'x', 'x', 'y', 'x', 'z']

A:
1, 5, 8
****