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: ['j', 's', '127', 'o', 'e', '227', 'k', 'o']

Answer: 1, 2, 7


Question: ['395', 'p', '373']

Answer: 3, 5, 7, 9


Question: ['339', '401']

Answer:
0, 1, 3, 4, 9