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.

Example Input: ['51', '461', '343', '15', '209', '51']
Example Output: 0, 1, 2, 3, 4, 5, 6, 9

Example Input: ['w', '13', 'b', '455', 'b', 'k']
Example Output: 1, 3, 4, 5

Example Input: ['s', 't', '461']
Example Output:
1, 4, 6