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: ['o', 'f', 'm', 'w', 'w', 'y', 'b']

Answer: -1


Question: ['s', '443', '239', 't', '99']

Answer: 2, 3, 4, 9


Question: ['d', 'v', 'q', 'd', 'c', '151', 'g']

Answer:
1, 5