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: ['z', 'c', 'n', '351', 'f', '239', '71', '351', 'b', '1', '321', 'h', '163']

A: 1, 2, 3, 5, 6, 7, 9
****
Q: ['165', '219', 'r', 's', '191', 'k', '39']

A: 1, 2, 3, 5, 6, 9
****
Q: ['k', '297']

A:
2, 7, 9
****