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: ['i', '325', '117', 'k', 'y', 'x', '49', '349', '477', 'u', '435']

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


Question: ['z', '95', '153', '495', '399', 's']

Answer:
1, 3, 4, 5, 9