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: ['205', '107', 'z']

Answer: 0, 1, 2, 5, 7


Question: ['x', '91', 'q', '417', '385', '455', '393', 'm', 's', 'c', '91', '71', 'n']

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


Question: ['21', '413', 'e', '15', 'm', '291']

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