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: ['y', 'b']

A: -1
****
Q: ['r', 'o', 'n', '219', 'a', '419', 'x', '261', 'h', 's', '373', '155', 's', '171']

A: 1, 2, 3, 4, 5, 6, 7, 9
****
Q: ['311', '367', '323', '231', '33', 'y', 'a', 's', '395', '491', '477', 'a', '211']

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