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: ['165', 'k', 'a', 'v', 'u', '61', '327']

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


Question: ['b', '351', 'g', 'k', '29', '15', '411', '97', 'r', '27', '279']

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


Question: ['173', 'w', 'c', '231', 'y', 'd']

Answer:
1, 2, 3, 7