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: ['229', 'x', '49', 'p', '73', '77', '337', '497']

A: 2, 3, 4, 7, 9
****
Q: ['181', 'n', 'p', '349', '321', '457', 'h', 's', 't', 'k', 'x', 'a', '145', '135', 'u']

A: 1, 2, 3, 4, 5, 7, 8, 9
****
Q: ['459', 'f', '235', 'j', '105', '225', '155', 'v', '221', '141', '117', '387', '377']

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