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: ['p', '305', 't', 'x', '497', '209', '151', '89', '53', '189', 'n', '129', 'c', '227', 'p']

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


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

Answer: 3, 4, 5, 9


Question: ['29', 'w', '11', 'g', 'o', '29', '279', '265']

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