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: ['23', 'p', '409', '305', 'z', 'q', '295', '391']

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


Question: ['49', 'r', '179', 'h', 'q', 'h', 'w', '187', '427', 'x', 'r']

Answer: 1, 2, 4, 7, 8, 9


Question: ['q', 'v', '221', 'z', 'l']

Answer:
1, 2