bbbb bbci bbin bbrc bcbc bccc bcci bcnu bcor bcru bcuc bibb bibi bibo bicc bici bico biin bin- binc bini binn bino binu bio- bioc bioi bion biou birb biri birn biro birr biru bnib bnin bnoc bnor bnrr bobb bobi bobo bobu boco bocu boi- boii boin boiu bonc boni bonn bono bonu boob booc boon boor bor- bori born boro borr boru boun bour brcb bric brin brio brno brob broc bron broo bror brou brrr bruc brun bubb bubi bubo bubu bucc buci buco bucu buic buin buir buiu bunb buni bunn buno bunu buon bur- burb buri burn buro burr buru c-bo cbbc cbcc cbcn cbcr cbcu cbir cbrn ccbc ccbn cccb cccc ccci cccu ccic ccii ccir ccnb ccnc ccni ccnr ccnu ccob ccoc ccrc ccri ccuc cibc cibi cibo cicc cici cico cicr cicu ciii cin- cinc cini cino ciob cion cior cirb circ ciri ciro cirr ciuc cnbc cnci cnco cnib cnic cnrc cnrr cobb cobi cobo cobu coco cocu coin coir con- conc coni conn cono coob coon cor- corb corc cori corn coro corr coub coun cour crbc crbu crcc crcr crib cric crin criu crob croc cron croo cror crub crun cub- cubb cubi cucc cuci cucn cui- cuin cuir cuno cuon curb curi curn curo curr i-no ibon ibrc ibri ibro icbc iccb iccc icci iccn icco iccr iccu icnb icnc icoc icon icor icrc icrr icru icub iiii iiio iino iioi iioo iirc iiuc inbo incb inci inco incr inni inno innr innu ino- inoi inon inor inou inri inro inui inun iobi ioci ioii ioio ioni ionn iono iooi iooo iori ioun ircc ircu iri- iric irin irio irob iroc iron irrc irri irun iucc iuiu iuno n-ii nbbc nbbo nbcc nbci nbco nbic ncbc ncbi nccc ncci nccn nccr nccu ncnc ncoc ncor ncrc ncri nibi nibo nicc nici nico nicu niir niiu nini nino nion nioo niou niro niru niur nnnn nobc nobi nobo nobu noci noco noib noin noio noir non- noni nonn nono nonu noo- noob noon nooo noor nor- norb norc nori norn noro norr noun nour nric nroc nron nrrc nubc nubi nuci nucu nuin nunc nunn nuno nuoc nuon nurc nuri nurn nurr nuru obbo obin oboi obon obor obri obro ocbc occc occi occn ocin ocon ocro ocrr ocur oici oiii oion onc- onco onic onir onni onno onon onor onur oobi oocr oooo orbb orbi orbo orbu orci orco ori- oric orin orio ornc orni orno oro- oron oror orri orro orub oucc ouii ouin ouir oun- our- ourn ouro ouu- rbbb rbbr rcbc rcbo rccb rccc rcic rcnr rcon rib- ribo ribu ricc rico riin rinn rino rion riou riri rnbr rnco rnin rob- robb robi robo robu rocc roco roin roio roir roiu ronc roni rono roob rooi roon roor rorc rori roro roru roub roun rrrr rrun rubb rubi rubu ruci ruin runc runi runn runo rurc ruri ruro ruru ruun ubbi ubbo ubic ubii ubir uboc ubon ucbc ucci ucin ucio ucon ucrc uirr uncc unci unco uni- unic unii unin unio unir unni unno unon unro uocc uor- urbi urci urib uric urin uriu urni uro- uroo urri urun urur uuni uuno uuoc uuri uuuu