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: ['v', 'p', '113', '241', 's', 'q', 'b', '293', 'l', 'w', 'w', '127']

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


Question: ['271', '293', '107', '233', '379', '377', 'b', '247']

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