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: ['o', '61', '475', '457', 'a', 'o', 'z', '227', '415', 'z', 'x', 'y', '73', '205', 'y']
Example Output: 0, 1, 2, 3, 4, 5, 6, 7

Example Input: ['b', '81', '77', '381']
Example Output:
1, 3, 7, 8