bbbb bbci bbeb bbrc bcbc bccc bcci bcec bcer bcie bcor bcvo bebb bebe bebi bebo beci beeb beer beic beir beo- beor berc bere beri bero berr bevo bibb bibe bibi bibo bicc bice bici bico bieb bier bio- bioc bioi birb bire biri biro birr bive bivi bobb bobe bobi bobo boce boco boec boee boeo boer boi- boie boii boob booc booe boor bor- bore bori boro borr bove bovi bovo brcb brce breb brec bree brei breo brer brev bric brie brio brob broc broe broo bror brrr brvi c-bo cbbc cbcc cbce cbcr cbec cbee cber cbir cbre cbvb cbve cbvr ccbc cccb cccc ccci cccv ccee ccic ccii ccir cciv ccob ccoc ccrc ccre ccri ccvi ccvo cec- cece ceci ceco ceeb ceec ceor cer- cerc cere ceri cero cevo cibc cibe cibi cibo cicc cici cico cicr ciee cier ciii ciob cior cirb circ cire ciri ciro cirr civc cive civo cobb cobe cobi cobo coce coco coir coob cor- corb corc core cori coro corr cove covo crbc crcc crce crcr cre- creb crec cree crei creo crib cric crie crob croc croe croo cror cvcc cver cvii cvrr ebbc ebbo ebbr ebcc eber ebic eboe eboo ebor ebro ecbc ecbe eccb eccc ecce ecci ecco ecib eco- ecrc ecri ecrr ecrv eeee eeoc eerc eero eico eiec eiei eier eire eoir eore eori erbb erbe ercc erce ereb erec erei erer erev eric erie erio erob eroc eroe eroi eroo errc erre erro erve ervi ever evie evir evoe evoo evre i-be ibec ibie ibrc ibri ibro icbc iccb iccc icci icco iccr icec icee icer icoc icor icrc icre icrr iecc ieie ieio iere ieri iiie iiii iiio iioi iioo iirc iobi ioci ioee ioii ioio iooi iooo iore iori irbe ircc iree irer iri- iric irie irio irob iroc irov irrc irre irri ivbv ivec iver ivic ivie ivor ivre o-eo obbo obec ober obie oboe oboi obor obre obri obro obvi ocbc occc occi oce ocee ocre ocro ocrr oec- oecc oeec oere oici oier oiii oire oobe oobi oocr ooer oooo oore orbb orbe orbi orbo orce orci orco ore- oreb orec oreo orer ori- oric orie orio oro- oroe oror orri orro orve orvr ovee over ovi- ovie ovo- ovoo ovre rbbb rbbr rcbc rcbo rccb rccc rcic rcvr rebb rebe rebo recc rece reci recr reeb reev reii reir rere reri rero reve revi revo rib- ribe ribo ricc rice rico rier rire riri rive rivo rob- robb robe robi robo rocc roce roco roer roev roio roir roob rooi roor rorc rore rori roro rove rovi rovo rrrr rv-c rver vbcc vcbi vcci vecc veci veer veie veii veir veor ver- verb vere veri vero veve vevi vevo vibe vic- vice vici vico vier viii virb virc vire viri viro virr vive vivi vivo voce voei voer voic voie voio voir vooc voor vor- vore vori voro vrci vreo vrio vroc vver vvob vvvv