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: ['d', '71', '65', '177', 'k']

A: 1, 5, 6, 7
****
Q: ['157', 'k', 'o', 'a', '279', 'g']

A: 1, 2, 5, 7, 9
****
Q: ['261', 'o', '325', '21', '315', 'h', '129', '237']

A:
1, 2, 3, 5, 6, 7, 9
****