hhhhh hi-hi hihon hinin hipo- hipop hipp- hippi hippo ho-ho ho-oh honno hopin hopon hoppo i-pin iiiii inini inio inio- inion inipi iono- ioooi ioooo ipini ippon n-p-n nihon niiip ninon ninpo niono niopo nipin nippo nnooo no-ip no-no no-op nohno nonin nonio nonni nonno nonoh nonop oh-oh oino- oinoi onin onion onoon onpop ooioo oonin ooooh ooooo ophi- ophio ophni opihi opio- opnin opoho oppin oppon p-n-p phinn phiph phon- phono pinho pinin pinn- pinni pinno pinon pippi pippo po-on po-po pohio ponin ponni poopo popin popoi popon popop poppi poppo