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: ['195', 'k', '175', 'a', 'g', '395', 'l', '313', '409', '327', '273']

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