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: ['b', 'm', '471']

Answer: 1, 4, 7


Question: ['59', '437', '145', '165', '217', 'l', '185', '495', 'z']

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


Question: ['x', 'm', 'y', 's', 'e', '195', '223', '97', 'h', 'e', 'c']

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