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: ['473', '449', '357', 'p', 'p', 'e', '377', '77']

Answer: 3, 4, 5, 7, 9


Question: ['385', 'b', 'c']

Answer: 3, 5, 8


Question: ['k', 'p', '85', 'j', '93', 'r', '169', '113']

Answer:
1, 3, 5, 6, 8, 9