PHYTOTOXIN

hi ho in it no oh oi on op ox oy pi ti to xi yo

hin hip hit hon hop hot hoy hyp ion nip nit nix noh noo not nth oho ono ooh oot opt oxo oxy phi pht pin pit pix poh poi poo pot pox pyx tho thy tin tip tit ton too top tot toy yin yip yon

hint hoop hoot hypo into nixy onto onyx otto phon phot pint piny pion pith pity pixy pony pooh poon poxy pyin thin thio tint tiny toit tony toon toot toph topi topo toyo tyin typo yoni