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: ['475', 's', '123', '389', 'y', 'm', 'v', '47', 'u', '479', '357', '279', '137', 'l', 'i']

A: 1, 2, 3, 4, 5, 7, 8, 9
****
Q: ['461', 'u', 't']

A: 1, 4, 6
****
Q: ['355', 'x', 'q', 'b', 'b', 'm', 'u', 'c', '293', 'j']

A:
2, 3, 5, 9
****