Only 18? Child's play. https://www.discovermagazine.com/planet-earth/why-this-fungus-has-over-20-000-sexes https://www.discovermagazine.com/planet-earth/why-thi

Only 18? Child's play. https://www.discovermagazine.com/planet-earth/why-this-fungus-has-over-20-000-sexes https://www.discovermagazine.com/planet-earth/why-this-fungu... Interestingly, I don't know of any zoological cases that would require more than a short int to enumerate.