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: ['487', 'x']
Example Output: 4, 7, 8

Example Input: ['a', 'n', '423', 'y', 'y', 'u', '55', 'y', '295', '73', 't', 'p']
Example Output: 2, 3, 4, 5, 7, 9

Example Input: ['49', 'e']
Example Output:
4, 9