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: ['69', '475', '133', 'u', 'z', '219', 'a', '245', 'y']

1, 2, 3, 4, 5, 6, 7, 9