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: ['a', 'n', '423', 'y', 'y', 'u', '55', 'y', '295', '73', 't', 'p']

A: 2, 3, 4, 5, 7, 9
****
Q: ['j', '195', 'u', '55']

A: 1, 5, 9
****
Q: ['447', 'b', 'x', '107']

A:
0, 1, 4, 7
****