Definition: 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.
Input: ['g', '3', '219', 'f', 'x', '393', '325', 'x', 'j', '461', 'a', '467', '251', 'k']
Output:
1, 2, 3, 4, 5, 6, 7, 9