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: ['j', 'd', '445', 'g', '263', '217', '357', 'c', '57', 'x']

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


Question: ['487', 'y', '91', '227', 'r', 'n', 't', '173', 'j', 'm', 'h', 'a', 'x', '1', 'o']

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