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: ['287', 'y', 'b', '79', '39', 'l']

Answer: 2, 3, 7, 8, 9


Question: ['345', '393', 'v', 'l', 'b', 'd', 'k', 'q', 'x']

Answer: 3, 4, 5, 9


Question: ['483', '231', 'h', '319', 'm', 'm', 'v']

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