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: ['s', '95', 'j', '173', '437', '143', 'n', '357', 'w', '239', '219']

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


Question: ['d', '395', 'd', '233', '271']

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


Question: ['l', '453', 't', '339', '423']

Answer:
2, 3, 4, 5, 9