hhhhh hi-hi hihos hiisi hipo- hipop hipp- hippi hippo hipps hisis hisop hispo hissi hisss ho-ho ho-oh hohos hoiss hoops hoosh hopis hoppo hopps hoshi hosho hosoi hospi hosps hosxp ihops iiiii ioooi ioooo iphis ipsi- ipsos is-is ishii ishis isios isisi isshi ixopo oh-oh oh-so ohohs oishi ooioo ooooh ooooo oopsi ophi- ophio ophis opihi opio- opoho oppos opsis oshio oship ososo ospis ossi- ossip ossis ossos oxxio p-o-x phiph phish phixx phos- phoss piisi pipis pippi pippo pissi pixis po-po pohio poohs poopo poops popis popoi popop popos poppi poppo posho posio posip posix pppox ppxii s-iii shhhh shiho shipp ships shish shiso shooi shoop shoos shopi shops shosh shosi shoxx sipho sipoo sipos sippi sippo sipsi sisis sissi so-ho so-so sohio sohos soosi sophi sopho sophs soppo soshi soss- sossi sphos spiss sposh sposi sposo ssssh sssss xiph- xishi xoops xoxox xphos xxiii xxxii xxxix