bbbb bbci bbeb bbrc bbrg bcbc bcbg bccc bcci bcec bcer bcie bcor bebb bebe bebi bebo beci beeb beeg beer begg begi bego beic beir beo- beor berc bere berg beri bero berr bibb bibe bibi bibo bicc bice bicg bici bico bieb bier bigb bigc bige bigg bigo bio- bioc biog bioi birb bire birg biri biro birr bobb bobe bobi bobo boce boco boec boee boeo boer boge bogg bogi bogo boi- boie boii boob booc booe boog boor bor- bore borg bori boro borr brcb brce breb brec bree breg brei breo brer bric brie brig brio brob broc broe brog broo bror brrr c-bo cbbc cbcc cbce cbcr cbec cbee cber cbgb cbir cbre ccbc cccb cccc ccci ccee ccgc ccic ccii ccir ccob ccoc ccrc ccre ccrg ccri cec- cece ceci ceco ceeb ceec cege cego ceor cer- cerc cere ceri cero cgcc cgcg cger cgro cibc cibe cibi cibo cicc cici cico cicr ciee cier cigi ciii ciob cior cirb circ cire ciri ciro cirr cobb cobe cobi cobo coce coco cogi cogo coir coob cor- corb corc core corg cori coro corr crbc crcc crce crcr cre- creb crec cree creg crei creo crib cric crie crig crob croc croe croo cror ebbc ebbo ebbr ebcc eber ebic eboe eboo ebor ebro ecbc ecbe eccb eccc ecce ecci ecco ecib ecig eco- ecog ecrc ecri ecrr eeee eeoc eerc eerg eero egbe egcc egcg egcr egec egee eger eggb egge eggi eggo egir ego- egoi egor egre egri eico eiec eiei eier eige eigg eire eoir eore eori erbb erbe ercc erce ereb erec erei erer erg- ergg ergi ergo eric erie erio erob eroc eroe eroi eroo errc erre erro gbbo gc-c gcbc gccc gcic gcii gcrg gebe gebi gece geer gege gegg gego geic geie geig geir geo- geog gerb gere geri gero gggg gibb gibe gicr gier gige gigg gigi gigo giog gioi gire girg giri giro girr gobe gobi gobo goce gocr goer gogi gogo goog gooi goor gorb gore gorg gori goro gorr grbr grcc grce greb grec gree greg grib gric grie grig grob groc grog groi groo gror grrr i-be i-go ibec ibeg ibge ibie ibrc ibri ibro icbc iccb iccc icci icco iccr icec icee icer icgc icoc icor icrc icre icrr iecc ieie ieio iere ieri igbc igbo igcc iger igoe igoo igor igri iiie iiii iiio iioi iioo iirc iobi iocg ioci ioee ioii ioio iooi iooo iore iorg iori irbe ircc ircg iree irer iri- iric irie irig irio irob iroc irrc irre irri o-eo obbo obec ober obie oboe oboi obor obre obri obro ocbc occc occi oce ocee ocre ocro ocrr oec- oecc oeec oegb oere ogb ogbe ogee oger ogge oggi ogog ogoi ogre ogri ogro oici oier oigo oiii oire oobe oobi oocr ooer oooo oore orbb orbe orbi orbo orce orci orco ore- oreb orec oreg oreo orer orge orgo ori- oric orie orig orio oro- oroe oror orri orro rbbb rbbr rcbc rcbo rccb rccc rcgc rcic rcrg rebb rebe rebo recc rece reci recr reeb rege regi rego regr reii reir reog rere rerg reri rero rgbe rgbi rib- ribe ribo ricc rice rico rier rige rigg rigi rigo rire riri rob- robb robe robi robo rocc roce roco roeg roer roge rogg rogi rogo roig roio roir roob roog rooi roor rorc rore rori roro rrrr