-hou hhhh hmmm hmph hohm hoho hom- homo homp homr homu hoom hoop hoor hopo hopp horo horr houp hour hrpp huhu humh humm humo hump huor hupp huro hurr huru mhmm mhmr mhor mmhm mmmh mmmm mmor mmpr mmpu mmrp mohm moho mohr mohu momo momu moop moor moph mopp moro moru moup mour mpho mppp mpro mprp muhr muhu mumm mumo mump mumu muro murr muru ohho ohoh ohum omo- omoo omor omro omuo ooho oooh oooo opo- opor oppo ormo oro- orom oror orph orro orum orup ouph our- ouro ouu- phoh phom phoo phrr phum pmmp pmmu pmpm pmpo pomo pomp pomu pooh poop poor pop- popo popp poro porr poum poup pour pppo pppp pprm ppru ppur pro- prom proo prop prou prrm prum pruu pump pupu pur- puro purp purr puru rhoh rhum rmrp rohm rohr rohu romm romo romp room roop roor ropo roro roru rouh roum roup rpho rrmp rrrr rrum ruhh ruhm ruhr rumm rumo rump rupp ruro rurp ruru u-rp uhoh uhuh uhup ummo umor umph uomo uor- upor uppp uppu upup urho uro- urom uroo urpo urrh urum urup urur uuuu