krrb krrc krre krrk krrn krro krrr kruc krue kruk krun krur kubb kubc kubd kube kubo kubr kubu kucb kucc kucd kuce kuco kucr kudd kude kudo kudu kued kuek kuen kueu kuke kukk kukn kuku kunc kund kune kunk kuno kunr kunu kuok kuon kuoo kurb kurd kure kurk kuro kurr kuru kuub kuuk kuur kuuu nbbc nbbo nbcc nbco nber ncbc nccc nccn nccr nccu ncdc ncdn ncdr ncdu ncec nced ncee ncen ncer ncnc ncnd ncoc ncor ncrc ncre ncue ncuk ndcc nddb ndde nddo nder ndoc ndor ndrc ndre nebb nebe nebn nebo nebr nebu necc nece neck neco necr nedc nedd nede nedo nedu neeb need neen neer neke neko neku nend nene neno nenu neo- neoc neod neon neoo nerc nerd nere nerk nero nerr neru neuc neue neuk neun neuo neur neuu nkok nkor nndb nnnn nobc nobo nobu noce nock noco node nodo nodu noed noer noke noko non- none nonn nono nonu noo- noob nook noon nooo noor nor- norb norc nord nore nork norn noro norr noun nour nrdc nren nroc nron nrrc nrrd nubc nube nubk nuce nuck nucu nudc nudd nude nudo nuee nuer nuke nuku nunc nune nunk nunn nuno nuoc nuon nurc nurd nure nurn nurr nuru nuuk o-eo obbo obec obed oben ober obkb oboe obok obon obor obre obro ocbc occc occn oce oced ocee ocke ocon ocre ocro ocrr ocur odbo oddd oded oden odeo oder odnb odon odoo odor odou odur oec- oecc oedn oedo oeec oen- oeno oere okcu oked oken oker okko okno okok okon okor okre okro okun okur onc- oncd once onco onde ondo one- oneb onec oned onee onek oneo oner onne onno onod onon onor onue onur oobe oocr ooer ooku oone oooo oord oore orbb orbe orbo orbu orce orco orde ordn ordo ordu ore- oreb orec ored orek oren oreo orer orke orko ornc orne orno oro- oroe orok oron oror orro orub oucc oudc oude oued ouen ouer oun- ound oune our- oure ourn ouro ouu- rbbb rbbr rcbc rcbo rccb rccc rcdc rcde rcnr rcon rcrd rder rdoc rebb rebe rebk rebo rebu recc recd rece reck recr recu redc redd rede redo redr redu reeb reed reek reen reke reko rend rene renk renn reno renu reod reou rerd rere rero reru reue reuk reuu rnbr rnco rndc rnod rob- robb robe robo robu rocc roce rock roco rodd rode rodo roed roen roer roke rokk roko rokr roku ronc rond rone ronk rono roob rood rook roon roor rorc rore rork roro roru roub roud roue rouk roun rred rrrr rrun rubb rube rubu ruce ruck rudd rude rudo rued ruen ruer ruke rukk rukn ruku runc rund rune runk runn runo ruok rurc rurd rure ruro ruru ruud ruun ubbe ubbo ubek uber uboc ubod ubon ubud ucbc ucdc ucdd ucon ucrc udbc uden uder udon udoo uduk udun uend ueno ukcc ukek ukeu ukko uknc ukok ukon ukrc ukur unbd unbe uncc unce unco unde undo uneb unec uned unee unen uner unke unkn unko unne unno unon unro uocc uoke uone uor- uore urbe urde urdu ure- ured urke urne uro- urok uroo urre uruk urun urur uuen uuno uuoc uuuu