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: ['243', 't', '249', 'q', '459', '469', '301', 'j', '215', '21']

0, 1, 2, 3, 4, 5, 6, 9