bbbb bbci bbdd bbeb bbrc bbrg bcbc bcbg bccc bcci bcde bcec bcer bcie bd-r bdbc bddc bdii bebb bebe bebi beci bede bedi beeb beed beeg beer begg begi beic beir berc berd bere berg beri berr bibb bibe bibi bicc bice bicg bici bide bidi bidr bieb bied bier bigb bigc bigd bige bigg birb bird bire birg biri birr brcb brce breb brec bred bree breg brei brer bric brid brie brig brrr c-cd cbbc cbcc cbce cbcr cbdb cbdc cbdi cbec cbee cber cbgb cbid cbir cbrd cbre ccbc cccb cccc ccci ccdc ccdi ccdr cced ccee ccgc ccic ccid ccii ccir ccrc ccre ccrg ccri cd-e cd-r cddb cddr cdec cder cdic cdii cdre cec- cece ceci cedd cede cedi ceeb ceec cege cer- cerc cerd cere ceri cgcc cgcg cged cger cibc cibe cibi cicc cici cicr cidc cide cidg cidi cidr ciee cier cigi ciid ciii cirb circ cire ciri cirr crbc crcc crce crcr crdc cre- creb crec cred cree creg crei crib cric crie crig dbcc dcbc dccb dccc dcci dcdb dcii dddd ddie ddrc ddre debe debi dec- decc decd dece deci dedd dede dedi deeb deed deeg deer dege degi deid deie deir der- derb derc dere derg deri derr dgeg dgge dibb dibe dice dici dide didi dieb died dier dige digg digi diii dird dire dirr drbc dred dree dreg drei drge drib dric drie ebbc ebbr ebcc ebed eber ebic ebid ecbc ecbe eccb eccc ecce ecci ecdc eced ecib ecig ecrc ecri ecrr eddc edde eddi ede- edei eder edge edie eede eeee eerc eerg egbe egcc egcg egcr egec egee eger eggb egge eggi egir egre egri eid- eide eidi eidr eiec eied eiei eier eige eigg eird eire erbb erbe ercc erce erde erdi ereb erec ered erei erer erg- ergg ergi eric erie errc erre gbde gc-c gcbc gccc gcic gcii gcrg gdci gddb gdrc gebe gebi gece gedd gede gedi geed geer gege gegg geic geie geig geir gerb gerd gere geri gggg gibb gibe gicr gidc gidd gide gidi gied gier gige gigg gigi gird gire girg giri girr grbr grcc grce grdc greb grec gree greg grib gric grid grie grig grrr i-be ibec ibed ibeg ibge ibid ibie ibrc ibrd ibri icbc icbd iccb iccc icci iccr icdc icdd icde icec iced icee icer icgc icrc icre icrr idbe idce idcr idec ided idee ider idic idid idie idig idir idrc idre iecc iedr ieie iere ieri igbc igcc iger igri iicd iide iied iiie iiii iirc irbe ircc ircd ircg irdc ired iree irer iri- iric irid irie irig irrc irre irri rbbb rbbr rcbc rccb rccc rcdc rcde rcgc rcic rcid rcrd rcrg rder rebb rebe recc recd rece reci recr redc redd rede redi redr reeb reed regd rege regi regr reid reii reir rerd rere rerg reri rgbe rgbi rib- ribe ricc rice ridc ridd ride ridi ried rier rige rigg rigi rire riri rred rrrr