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: ['c', 'b', '43', 'q', '303', '337', '187', '233', '499']

0, 1, 2, 3, 4, 7, 8, 9