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: ['83', 'q', 'x', '3', '63', '233', 'u', '265', '471', 'p', '425', 'y']

1, 2, 3, 4, 5, 6, 7, 8