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: ['g', '185', '73', 'h', '455', '333', 'l', '403', 'k', 'e', '77', '429', '423', '453']

Answer: 0, 1, 2, 3, 4, 5, 7, 8, 9


Question: ['493', '241', '239', 'g', 'q', '319', '49', '245']

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


Question: ['k', '187', '81', '301', '227', '343']

Answer:
0, 1, 2, 3, 4, 7, 8