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: ['z', 'b', 'c', 'l', '453', 'h', '215', '447', '487', 'p', 'y', 'v']

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


Question: ['175', 'q', 'h', 'z', 'v', 'y', '39', '419', '87', '425', 'z', '375']

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


Question: ['299', 's']

Answer:
2, 9