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.
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Question: ['k', '107', '333', '317', 'm', 'w', 'g', 'f']

Answer: 0, 1, 3, 7


Question: ['437', 'e', 'b', 'f', '203', 't', '5', '461', 'e', '367', '391', '81']

Answer: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9


Question: ['c', 'q', '315', 'x', '357', 't', 'p', '417', 'f', '395', 'k', '73', 'e', '339', '261']

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