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: ['251', '173', '301', '339', '267', 'p', '347']

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


Question: ['271', '9', 'v', '93', 'f', 'd']

Answer: 1, 2, 3, 7, 9


Question: ['d', 's', '357', 'v']

Answer:
3, 5, 7