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: ['h', 'e', 'v']

A: -1
****
Q: ['e', 'l', 'p', 'e', '55', 'j', 'z', '217', 'v', '399', 's', '119']

A: 1, 2, 3, 5, 7, 9
****
Q: ['n', '247']

A:
2, 4, 7
****