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.
--------
Question: ['d', '335', '23', '461', '497', 'p', '313']

Answer: 1, 2, 3, 4, 5, 6, 7, 9


Question: ['159', '3', 'f', 'k', 'o', 'm']

Answer: 1, 3, 5, 9


Question: ['21', 'n', '69', '35', '35', 'z', 'z', 'y', 'm', '477', 'e', '145', '67']

Answer:
1, 2, 3, 4, 5, 6, 7, 9