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: ['u', 'c', 'f', 'z', '51', '301', 'q', '275']

Answer: 0, 1, 2, 3, 5, 7


Question: ['85', '311', 'x', '97', 'b', '277', 's', 'a', 'v', 'o', 'a']

Answer: 1, 2, 3, 5, 7, 8, 9


Question: ['c', '123', '185', '467', 'l', 'i', 'i', 's', 'a', '349', 'v', '139', 'k', 'g', '79']

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