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: ['p', 'n', 'c', '113', '105', '423', 'k', 'a', '211', 'k', '91', '389']

0, 1, 2, 3, 4, 5, 8, 9