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: ['381', '357', 'w', 'r', '115', 'z', '389', 'p', 'p', '101', '229']

Answer: 0, 1, 2, 3, 5, 7, 8, 9


Question: ['287', 'y', 'b', '79', '39', 'l']

Answer: 2, 3, 7, 8, 9


Question: ['499', '337', '73']

Answer:
3, 4, 7, 9