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: ['t', '211', 'h', '99']

Answer: 1, 2, 9


Question: ['229', 'q', 'e']

Answer: 2, 9


Question: ['y', 'o', 'o', 'h', '349']

Answer:
3, 4, 9


