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: ['u', '341', '151', '1', '157', '211', '189']

A: 1, 2, 3, 4, 5, 7, 8, 9
****
Q: ['447', '77', '337', 'i', '257', '477', 'l', 'm', '357', 'k', '293', '425', 's']

A: 2, 3, 4, 5, 7, 9
****
Q: ['53', '167', '377', '451', 'm', '121', 'i', '99', '189', 'u']

A:
1, 2, 3, 4, 5, 6, 7, 8, 9
****