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: ['473', '357', 'i', 'j', '299', 's', '495', '165', 'o', 'l', 'x', 'v', '1', 'o', '469']

Answer: 1, 2, 3, 4, 5, 6, 7, 9


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

Answer: 1, 2, 6, 7, 8


Question: ['161', '217', '153', '55']

Answer:
1, 2, 3, 5, 6, 7