h-ii hhhh hhhs hhip hihi hiho hiis hipo hipp hips hish hiss hoho hoip hois hoop hoos hopi hopo hopp hops hosh hosp hoss hphs hpps hpss hshs hsps hssp ihis ihop ihss iiii iiio iiis iioi iioo iiop iios iisi iisp ioii ioio iooi iooo ioos iops ioso ipoh ipop ipos ippo ipsi ipso ipsp ipss ishi ishs isis iso- isop isos isps issh issi isso issp isss ohhi ohho ohhs ohio ohis ohoh ohos ohso ohss oiii oios ooho oohs oooh oooo ooos oops oosi ophi ophs opii opio opis opo- opos oppi oppo opps opsi oshi osho oshp oshs osii osip osis osoi osoo osos ossi osso phhs phi- phip phis phoh phoo phos piip pipi pipo pipp pips pish pisi piso piss pohs poio pois pooh poop poos pop- popi popo popp pops posh posi poso poss pphi pphs ppih ppos pppo pppp ppps ppsh ppss pshs psip psis psoi psos psph pspi pspp psps psso s-ii s-os shhh shhs shih shii shio ship shis shoo shop shos shps sihi sihs siop sios sipi sipo sipp sips sish sisi siss sohh soho sohp sohs sois soop soos soph sopi sopo sopp sops sosh sosi soso soss sphs spio spip spis spoo spop spos spps spso spsp spss sshs ssis ssop sspo ssps sssh sssi ssss