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.
--------
Question: ['379', 'w', 'b', '385', '429', '3', '297', '297', 't', 'z', 'i', '207', 'e', 'a']

Answer: 0, 2, 3, 4, 5, 7, 8, 9


Question: ['c', 'h', '151', 'g', 'd', 'd', 'k', '37']

Answer: 1, 3, 5, 7


Question: ['409', 'm', 'n', 'k', 'j', '25', '149', '441', '459']

Answer:
0, 1, 2, 4, 5, 9