i-no iiii iiio iino iioi iioo iiop inni inno innr innu ino- inoi inon inor inou inp- inpi inpp inri inro inui inun inup ioii ioio ioni ionn iono iooi iooo iori ioun ipin ipop ippo ippr ipri ipur iri- irin irio irip iron irop irov irri irun iuiu iuno iupp ivin ivon ivor n-ii n-up niip niir niiu nini nino nion nioo niou nipr niro niru nirv niur nivo nivr nnnn nnpi nnpr noin noio noir non- noni nonn nono nonu noo- noon nooo noop noor noov nor- nori norn noro norr norv noun noup nour nov- novi novo npin npiv npov npri nron nrpn nuin nunn nuno nuon nuri nurn nurp nurr nuru nurv nuvo nvir nvpi oiii oion onir onni onno onon onor onpu onup onur oooo opii opin opio opo- opon opor oppi oppo ori- orin orio orni orno oro- oron oror orpi orri orro orup orvr ouii ouin ouir oun- oupv our- ourn ouro ouu- ovi- ovni ovo- ovon ovoo ovpp piip pini pinn pino pinp pinu pion pipi pipo pipp piri pirn piro pirr piru pivo pnin pnon pnpo pnpp pnro pnup poin poio poni pono ponp poon poop poor pop- popi popo popp pori porn poro porr poui poun poup pour povo pppn pppo pppp ppru ppur pri- prii prin priv prnp pro- pron proo prop prou prov prri pruu puin puir puiu puno punu pupi pupu pur- puri puro purp purr puru riin rinn rino rion riou ripi ripp ripr riri rivo rivp rnin rnpv roin roio roir roiu roni rono rooi roon roop roor ropo rori roro roru roun roup rovi rovo rpii rpon rppn rrrr rrun ruin runi runn runo rupp ruri ruro rurp ruru ruun ruvi ruvu u-rp uipi uirr uni- unii unin unio unir univ unni unno unon unop unov unro uor- uovo upin upnp upon upor uppp uppu upri upup urin uriu urni uro- uroo urpo urri urun urup urur uuni uuno uuri uuuu uvri uvvu viii vini vino vinu vion vipr viri viro virr viru vivi vivo vnir voin voio voip voir voni vonn voor vor- vori voro voru voun vour vpon vpro vrin vrio vrnn vron vrpn vuir vuno vurp vvvv