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

A: 1, 5, 9
****
Q: ['375', '457', '423', 'q', 't']

A:
2, 3, 4, 5, 7
****
