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: ['c', '155', '61']

A: 1, 5, 6
****
Q: ['395', 'p', '373']

A: 3, 5, 7, 9
****
Q: ['393', '473', 'q', '187', '23', 'd', '201', '391', '355', '21']

A:
0, 1, 2, 3, 4, 5, 7, 8, 9
****