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 irri irun iuiu iuno iupp n-ii n-up niip niir niiu nini nino nion nioo niou nipr niro niru niur nnnn nnpi nnpr noin noio noir non- noni nonn nono nonu noo- noon nooo noop noor nor- nori norn noro norr noun noup nour npin npri nron nrpn nuin nunn nuno nuon nuri nurn nurp nurr nuru 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 ouii ouin ouir oun- our- ourn ouro ouu- piip pini pinn pino pinp pinu pion pipi pipo pipp piri pirn piro pirr piru 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 pppn pppo pppp ppru ppur pri- prii prin prnp pro- pron proo prop prou prri pruu puin puir puiu puno punu pupi pupu pur- puri puro purp purr puru riin rinn rino rion riou ripi ripp ripr riri rnin roin roio roir roiu roni rono rooi roon roop roor ropo rori roro roru roun roup rpii rpon rppn rrrr rrun ruin runi runn runo rupp ruri ruro rurp ruru ruun u-rp uipi uirr uni- unii unin unio unir unni unno unon unop unro uor- upin upnp upon upor uppp uppu upri upup urin uriu urni uro- uroo urpo urri urun urup urur uuni uuno uuri uuuu