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: ['q', 'u', '199', 'v', '249']

A: 1, 2, 4, 9
****
Q: ['m', '347', 'o', 'i', 'u', '135', 'e', '179', 'q', '13']

A: 1, 3, 4, 5, 7, 9
****
Q: ['q', 'k']

A:
-1
****