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: ['99', '245', 'c', '435', '255', 'v']

Answer: 2, 3, 4, 5, 9


Question: ['f', '73', 'k', '333', '345', 'e', 'x', 'j']

Answer: 3, 4, 5, 7


Question: ['317', 'f']

Answer:
1, 3, 7