hhhhh hi-hi hihon hinin hipo- hipop hipp- hippi hippo hiroi hiron hiroo hirox hixon ho-ho ho-oh honir honno honor hoori hoorn hopin hopon hoppo horii horin horio horno horon horro i-pin iiiii inhir inini inio inio- inion inipi inoor inori inrio inrix iono- ioooi ioooo iorio ipini ippon irinn irion irono irori irpin ixion ixopo n-p-n nihon niiip ninon ninox ninpo niono niopo nioro nipin nippo nipri nipro nirop nixon nnooo no-ip no-no no-op nohno nohor nohri nonin nonio nonni nonno nonoh nonop noori norin norio noron norro noxon oh-oh ohorn ohrio oino- oinoi oiron onin onion onir- oniro onoon onorn onpop onrio ooioo oonin ooooh ooooo ophi- ophio ophir ophni opihi opio- opir opnin opoho oppin oppon orino orion orni- ornon oroix orono oropi orphx orpin orrin oxxio p-n-p p-o-x phhir phinn phiph phiri phixx phon- phono phrop piiri pinho pinin pinn- pinni pinno pinon pinor pippi pippo pipri pirho pirin pirix pirni piron pirri pirro po-on po-po pohio ponin ponir ponni ponor poopo poori popin popoi popon popop poppi poppo porin porn- porno poro- poroi poron porri porro poxon pppox ppxii prion prior prohn proin proix proor prop- propn propp propr proxi rhin- rhino rhoon rioni ripio ripon rixoi rixon ro-ro rohri ronin ronno roohi ropin roxio rprop xinpi xiph- xonix xonox xorro xoxox xxiii xxxii xxxix