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: ['j', '195', 'u', '55']

A: 1, 5, 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: ['271', 's', 'e', 'h']

A:
1, 2, 7
****