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: ['y', 'o', '287', 'm', 's', '61']

Answer: 1, 2, 6, 7, 8


Question: ['205', '347', '423', 'm', '363', 'u', 'g']

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


Question: ['483', 'u', '463', '353', '71', '343', 'f', 'l', 'w', 'k', 'd', '105']

Answer:
0, 1, 3, 4, 5, 6, 7, 8