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: ['175', 'c', 'c']

Answer: 1, 5, 7


Question: ['r', '495', '383', 'd', '369', '323', 'e', 'c', '149', 'q', '487', 'q', 'c']

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


Question: ['237', '159', 'w', 'k', '141', '157', 'y', '287', '63', '469', 'v', 't']

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