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: ['109', 'b']

Answer: 0, 1, 9


Question: ['397', '287', '401', '97']

Answer: 0, 1, 2, 3, 4, 7, 8, 9


Question: ['317', 't', 's', 'u', 'y', '361']

Answer:
1, 3, 6, 7