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: ['449', '257', 'r', '173', 'a', '209', 'i', 'q', '455']

0, 1, 2, 3, 4, 5, 7, 9