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: ['473', '449', '357', 'p', 'p', 'e', '377', '77']

A: 3, 4, 5, 7, 9
****
Q: ['h', 'e', 'v']

A: -1
****
Q: ['287', '137', 'x', 'd', '149', '333', 'o', 'w', 'l', '311', '477', 'u', 'h', 'q']

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