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: ['b', 'g', '181', 'y', 'd', 'v', '95', 'h', 'n', '103', '41', 'm', 'h', '445', 'z']

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


Question: ['243', 't', '249', 'q', '459', '469', '301', 'j', '215', '21']

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


Question: ['r', '335', '145', '351', 'g', '161', 'a', '9', 'p', 'o', 'e', '49', 'h', 'z', 't']

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