Instructions: 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: ['y', '21', 'b', '155', 'u', 'v', '125', 'g', 'y', '399', 't', 'u', 'v', '139', '243']
Output:
1, 2, 3, 4, 5, 9