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: ['p', '231', 'd', 'i', '33', '431']

A: 1, 2, 3, 4
****
Q: ['395', 'p', '373']

A: 3, 5, 7, 9
****
Q: ['397', 'r', 't', '323', '259']

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