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', '347', '423', 'm', '363', 'u', 'g']

Answer: 0, 2, 3, 4, 5, 6, 7


Question: ['h', 't', 'h', 'i', 'c', '441', '117', '463', 'r']

Answer: 1, 3, 4, 6, 7


Question: ['363', '19', 'h', 'h', '265', 'r', '445', '293']

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