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: ['475', '19', 'k', '307', '417']

Answer: 0, 1, 3, 4, 5, 7, 9


Question: ['483', '409', '129', 'u', '167', '275', 'p', '163', 'r', 'q', 'i', '481', 'j', '271']

Answer: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9


Question: ['o', '45', 'r', 'h', 'w', '73']

Answer:
3, 4, 5, 7