bbbb bbci bbeb bbrc bcbc bccc bcci bcec bcer bcie bcor bcoz bebb bebe bebi bebo beci beeb beer beic beir beo- beor berc bere beri bero berr beze bezi bibb bibe bibi bibo bicc bice bici bico bieb bier bio- bioc bioi birb bire biri biro birr bize bizz bobb bobe bobi bobo boce boco boec boee boeo boer boi- boie boii boob booc booe boor booz bor- bore bori boro borr borz bozi bozo brcb brce breb brec bree brei breo brer brez bric brie brio briz brob broc broe broo bror broz brrr bzer bzie bzoe bzzz c-bo cbbc cbcc cbce cbcr cbec cbee cber cbir cbre ccbc cccb cccc ccci ccee ccic ccii ccir ccob ccoc ccrc ccre ccri cec- cece ceci ceco ceeb ceec ceor cer- cerc cere ceri cero ceze cibc cibe cibi cibo cicc cici cico cicr ciee cier ciez ciii ciob cior cirb circ cire ciri ciro cirr cize cobb cobe cobi cobo coce coco coir coob cor- corb corc core cori coro corr coze cozi cozz crbc crcc crce crcr crcz cre- creb crec cree crei creo crib cric crie crob croc croe croo cror croz ebbc ebbo ebbr ebcc eber ebic eboe eboo ebor ebro ecbc ecbe eccb eccc ecce ecci ecco ecib eco- ecrc ecri ecrr eeee eeoc eerc eero eeze eico eiec eiei eier eire eizo eoir eore eori erbb erbe ercc erce ereb erec erei erer erez eric erie erio eriz erob eroc eroe eroi eroo errc erre erro erzi ezer ezio ezri ezzo 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 irrc irre irri izze izzo o-eo obbo obec ober obie oboe oboi obor obre obri obro ocbc occc occi oce ocee ocre ocro ocrr oec- oecc oeec oere oici oier oiii oire oize oobe oobi oocr ooer oooo oore ooze oozi orbb orbe orbi orbo orce orci orco ore- oreb orec oreo orer ori- oric orie orio oro- oroe oror oroz orri orro orzo ozee ozer ozie rbbb rbbr rcbc rcbo rccb rccc rcic rebb rebe rebo recc rece reci recr recz reeb reii reir reiz rere reri rero reze rezi rib- ribe ribo ricc rice rico rier riez rioz rire riri rize rizi rizz rob- robb robe robi robo rocc roce roco roer roio roir roiz roob rooi roor rooz rorc rore rori roro roze rozi rozz rrrr z-ro zber zebe zeir zeri zero zeze zibo zice zico zirc ziri ziro zizi zizz zobo zoco zoic zoio zoo- zorb zorc zore zori zoro zozo zrce zrze zzzz