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: ['285', 'w', '37', '471', 'y', '435', '27', '415', 'f', 's', '27', 'b']

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


Question: ['m', '347', 'o', 'i', 'u', '135', 'e', '179', 'q', '13']

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


Question: ['297', 'f', 'v', '303', '277', 'p', '31', 'z', '65', '369', 'e', 'p', '349', '121']

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