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: ['r', '135', 't', 'm', 'f', '329', '475', '243', 'z', 'q', '31', '141']

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


Question: ['n', 'f', '355', 'e', '113', '131', '443', '275', '249', '487']

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


Question: ['p', '27', '113', 'z', '31', 'o', '89', '325', 'q', '157', 'a', '461']

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