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: ['493', '441', '3', 'p', '23', 'x', 'n', '417', '299', 'v', 'l', '415']

A: 1, 2, 3, 4, 5, 7, 9
****
Q: ['g', 't', '31', 't', 's']

A: 1, 3
****
Q: ['51', '247', '141', '353', '69', 'o', 'm']

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