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: ['23', 'p', '409', '305', 'z', 'q', '295', '391']

Answer: 0, 1, 2, 3, 4, 5, 9


Question: ['363', 'w', '151', 'd']

Answer: 1, 3, 5, 6


Question: ['439', '453', '279', '7', 'w', '413', '29', '291', '107', 'n']

Answer:
0, 1, 2, 3, 4, 5, 7, 9