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: ['n', '319', 's', '325', '177', '161', '43', 'g', 'o', '59', 'w', 'y', 'g', 'm']

A: 1, 2, 3, 4, 5, 6, 7, 9
****
Q: ['143', 'i', '499', 't', '27']

A: 1, 2, 3, 4, 7, 9
****
Q: ['475', 's', '123', '389', 'y', 'm', 'v', '47', 'u', '479', '357', '279', '137', 'l', 'i']

A:
1, 2, 3, 4, 5, 7, 8, 9
****