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: ['w', 't', 'a', '199', '385']

Answer: 1, 3, 5, 8, 9


Question: ['345', '393', 'v', 'l', 'b', 'd', 'k', 'q', 'x']

Answer: 3, 4, 5, 9


Question: ['173', 'l', 'e', '271', '485', 'c', 'f', 't', 'k', '369']

Answer:
1, 2, 3, 4, 5, 6, 7, 8, 9