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: ['363', '455']

Answer: 3, 4, 5, 6


Question: ['7', 'u', 's', '75', 't', 'o']

Answer: 5, 7


Question: ['229', 'x', '487', 'f', 'p']

Answer:
2, 4, 7, 8, 9