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: ['d', '335', '23', '461', '497', 'p', '313']

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


Question: ['7', 'u', 's', '75', 't', 'o']

Answer: 5, 7


Question: ['d', '81', 'y', '337', 'a', 'l']

Answer:
1, 3, 7, 8