niku ning nini nino niog nion nioo niou niro niru niur nkgb nkio nkok nkor nngn nnnn nobc nobi nobo nobu noci nock noco nogg nogo noib noik noin noio noir noki noko non- nong noni nonn nono nonu noo- noob nook noon nooo noor nor- norb norc norg nori nork norn noro norr noun nour nric nroc nron nrrc nubc nubi nubk nuci nuck nucu nuik nuin nuki nuku nunc nung nunk nunn nuno nuoc nuon nurc nuri nurn nurr nuru nuuk obbo obin obkb oboi obok obon obor obri obro ocbc occc occi occn ocin ocon ocro ocrr ocur ogb oggi ogin ogni ogog ogoi ogon ogou ogri ogro ogui ogun oici oick oigo oiii oiko oink oion okcu okgo okic okir okko okni okno okok okon okor okro okun okur onc- onco ongi ongo ongu onic onir onni onno onon onor onur oobi oocr ooku oooo orbb orbi orbo orbu orci orco orgn orgo ori- oric orig orin orio orko ornc orni orno oro- orok oron oror orri orro orub oucc ouii ouin ouir oun- oung our- ourn ouro ouu- rbbb rbbr rcbc rcbo rccb rccc rcgc rcic rcnr rcon rcrg rgbi rib- ribo ribu ricc rick rico rigg rigi rigo rigu riin riki rikk riku ring rink rinn rino rion riou riri rnbr rnco rnin rob- robb robi robo robu rocc rock roco rogg rogi rogo roig roik roin roio roir roiu roki rokk roko rokr roku ronc rong roni ronk rono roob roog rooi rook roon roor rorc rori rork roro roru roub rouk roun rrrr rrun rubb rubi rubu ruci ruck rugg rugi ruin ruki rukk rukn ruku runc rung runi runk runn runo ruok rurc ruri ruro ruru ruun ubbi ubbo ubic ubii ubik ubir uboc ubon ucbc ucci ucin ucio ucon ucrc ugcc ugcg uggo ugni ugri ugro ugur uguu uirr ukcc ukko uknc ukok ukon ukrc ukur uncc uncg unci unco ungo ungu uni- unic unii unik unin unio unir unkn unko unni unno unon unro uocc uor- urbi urci urgi urgu urib uric urik urin uriu urni uro- urok uroo urri uruk urun urur uuni uuno uuoc uuri uuuu