hhhhh hi-hi hihon hinin hinny hipo- hipop hipp- hippi hippo hippy hixon ho-ho ho-oh honno hopin hopon hoppo hoppy hopyn hoyin hynny hyphy hypn- hypno hypo- hyppo i-pin iiiii inini ininy inio inio- inion inipi inopy iono- ioooi ioooo ipini ippon ixion ixopo iyiyi n-p-n nihon niiip ninny ninon ninox ninpo niono niopo nipin nippo nippy nixon nnooo no-ip no-no no-op nohno nonin nonio nonni nonno nonny nonoh nonop noppy noxon noynx noyon npxpy o-hoy oh-oh oino- oinoi onin onion onoon onpop onyon onyxx ooioo oonin ooooh ooooo ophi- ophio ophni ophyx opihi opio- opnin opoho oppin oppon opypy oxxio p-n-p p-o-x phinn phiph phixx phon- phono phony phynn phyno phynx pinho pinin pinn- pinni pinno pinny pinon pinoy piony pippi pippo pippy po-on po-po pohio pohoy ponin ponni ponyo poopo poopy popin popoi popon popop poppi poppo poppy poxon pppox ppxii pynn- pynon pypyn xinpi xinyi xiph- xiyon xonix xonox xoxox xxiii xxxii xxxix yinon yinxi yippy ynion yo-ho yo-yo yohio yopon