Q: What is the result of 99 minus 99? A: 
Q: What is the result of 89 minus 80? A: 
Q: What is the result of 99 minus 99? A: 
Q: What is the result of 99 minus 91? A: 
Q: What is the result of 99 minus 99? A: 
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Q: What is the result of 91 minus 96? A: 
Q: What is the result of 99 minus 99? A: 