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: ['219', 'v', '295', '291', 'n', 'a', '133', 'a', 'y', 'i', 'e', '235', '461']

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


Question: ['163', '291', 'm', 'z', '99', 'd', '365', 'm', '89', 's', 'e', 'q', 's', '161']

Answer: 1, 2, 3, 5, 6, 8, 9


Question: ['53', '457', '437']

Answer:
3, 4, 5, 7