According to rule 93.3, rule 899 is rule 93. Unfortunately, this too is unknown.
Rule 699 says that rule 700 is rule 93. Maybe try that instead of rule 899?
Rule 899 is rule 93. Still, I found it.( ͡° ͜ʖ ͡° )
HAY GUYS I FOUND RULE 899 ^_^
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