bbbb bbci bbeb bbrc bbrg bcbc bcbg bccc bcci bcec bcer bcie bcru bcuc bebb bebe bebi beci becu beeb beeg beer begg begi begu beic beir berc bere berg beri berr beru beur bibb bibe bibi bicc bice bicg bici bieb bier bieu bigb bigc bige bigg bigu birb bire birg biri birr biru brcb brce breb brec bree breg brei brer bric brie brig brrr bruc brue brug bubb bube bubi bubu bucc buce buci bucu buer bueu buge bugg bugi buic buie buir buiu bur- burb bure burg buri burr buru cbbc cbcc cbce cbcr cbcu cbec cbee cber cbgb cbir cbre ccbc cccb cccc ccci cccu ccee ccgc ccic ccii ccir ccrc ccre ccrg ccri ccuc cebu cec- cece ceci ceeb ceec cege cer- cerc cere ceri ceui cgcc cgcg cger cibc cibe cibi cicc cici cicr cicu ciee cier cigi cigu ciii cirb circ cire ciri cirr ciuc crbc crbu crcc crce crcr cre- creb crec cree creg crei creu crib cric crie crig criu crub crue crug cub- cubb cube cubi cucc cuce cuci cuer cui- cuir curb cure curi curr ebbc ebbr ebcc eber ebic ebru ebur ecbc ecbe eccb eccc ecce ecci ecib ecig ecrc ecri ecrr ecru eeee eerc eerg egbe egbu egcc egcg egcr egec egee eger eggb egge eggi egir egre egri eiec eiei eier eige eigg eire erbb erbe ercc erce ereb erec erei erer erg- ergg ergi eric erie eriu errc erre erub eruc erur eubc eubi euer euge eur- eurc eure gc-c gcbc gccc gcic gcii gcrg gebe gebi gece geer gege gegg geic geie geig geir gerb gere geri geru geue gggg gibb gibe gicr gier gige gigg gigi gire girg giri girr giru giue giur grbr grcc grce greb grec gree greg greu grib gric grie grig grrr grub grue grug grui grur gubb gubi gubu guci guer gugb guge gugg gugi gugu guib gurb gure gurg guri gurr guru i-be ibec ibeg ibge ibie ibrc ibri icbc iccb iccc icci iccr iccu icec icee icer icgc icrc icre icrr icru icub icue iecc ieie iere ieri igbc igcc iger igri igue iiie iiii iirc iiuc irbe ircc ircg ircu iree irer iri- iric irie irig irrc irre irri iucc iuce iuge iuiu rbbb rbbr rcbc rccb rccc rcgc rcic rcrg rebb rebe rebu recc rece reci recr recu reeb rege regi regr regu reii reir reiu rere rerg reri reru reue reuu rgbe rgbi rib- ribe ribu ricc rice rier rieu rige rigg rigi rigu rire riri riue rrrr rubb rube rubi rubu ruce ruci ruer ruge rugg rugi rurc rure ruri ruru u-ie ubbe ubbi uber ubic ubii ubir ucbc ucci ucrc ueir ugcc ugcg ugri ugur uguu uige uirr urbe urbi urci ure- urge urgi urgu urib uric urie uriu urre urri urur uuri uuuu