gggg ggpo gmmr gogo gomo gomu goog goom goop goor gopo gopu gorg gorm goro gorp gorr gou- goug goum goup gour gpgp gprp grog grom groo grop gror grou grov grrr grug grum grur gugg gugu gumm gumo gump gurg guro gurr guru gvvv mgrm mmmm mmor mmpr mmpu mmpv mmrp mogg mogo mogu momo momu moog moop moor moov mopp morg moro moru moup mour mppp mpro mprp mugg mugo mugu mumm mumo mump mumu murg muro murr muru ogog ogou ogpu ogro ogum omgp omo- omoo omor omov omro omuo oooo opo- opor oppo orgo ormo oro- orom oror orro orum orup orvr oupv our- ouro ouu- ovo- ovoo ovpp ovum pgmp pgou pgpu pgup pmmp pmmu pmpm pmpo pogg pogo pomo pomp pomu poop poor pop- popo popp porg poro porr poum poup pour povm povo ppmv pppo pppp pprm ppru ppur prmv pro- prog prom proo prop prou prov prrm prum pruu pugo pugu pump pupu pur- purg puro purp purr puru rmmv rmrg rmrp rogg rogo romm romo romp roog room roop roor ropo roro roru roum roup rovo rrmp rrrr rrum rugg rumm rumo rump rupp ruro rurp ruru ruvu u-rp uggo ugro ugur uguu umgo ummg ummo umor umpg uomo uor- uovo upgo upor uppp uppu upup urgu uro- urom uroo urpo urum urup urur uuuu uvvu vgpu vogu vomp voog voom voor vor- vorm voro voru vour vpro vrpm vugg vugo vurg vurp vvog vvvv