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: ['159', '3', 'f', 'k', 'o', 'm']

Answer: 1, 3, 5, 9


Question: ['349', '327', 'c', 'a', '493', 'a', 'm', '337', '397', '213', '203', '139']

Answer: 0, 1, 2, 3, 4, 7, 9


Question: ['401', '393', 'm', 'm', '407', '243', '79', '269', 'k', '35', '489', 'u', '207', '99']

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