bbbb bbci bbcm bbrc bcbc bccc bcci bccm bibb bibi bicc bici bick birb biri birk birr bmci bmic bmir bmmi brcb bric brik brim brkb brmc brrm brrr cbbc cbcc cbcm cbcr cbir cbkm cbkr cbrm ccbc cccb cccc ccci cccm ccic ccii ccim ccir cckm ccmb ccmc ccmm ccrc ccri cibc cibi cicc cici cicr ciii cikr cimb cimi cimm cimr cirb circ ciri cirk cirm cirr ckbc ckbi ckck ckcm ckrc ckrm cmbc cmcc cmii cmir cmmb cmmc cmmi cmri cmrr crbc crcc crcr crib cric crik crim crkc crmb ibbm ibim ibrc ibri icbc icbm iccb iccc icci iccr icmc icmi icmm icrc icrm icrr iiii iimc iirc ikki ikri imbi imcb imci imck imir immi imrc imri imrr irbm ircc iri- iric irki irmc irrc irri k-ci kbbb kbbc kbbi kbbk kbbm kbbr kbcb kbci kbck kbcr kbib kbic kbik kbim kbkb kbkk kbkr kbmb kbmc kbmi kbmr kbrb kbrc kbri kbrk kcbc kcbi kcbk kcbr kccb kccc kcci kcck kccr kcic kcii kcim kcir kckc kckk kckm kckr kcmb kcmc kcmi kcmk kcmm kcmr kcrc kcri kcrr kibb kibc kibi kibr kicb kicc kick kicm kicr kiic kiii kiik kikc kiki kikk kikr kimb kimi kimm kirb kirc kiri kirk kirr kkbb kkbi kkbr kkcb kkci kkck kkcm kkcr kkic kkik kkim kkkk kkmc kkmi kkmk kkmr kkrb kkrc kkrk kkrr kmbc kmbi kmbr kmcb kmcc kmci kmcm kmcr kmic kmkk kmmk kmmm kmmr kmrb kmrc kmri kmrr krbb krbi krbk krbm krbr krcb krcc krci krcm krib krik krim krkc krki krkk krkr krmb krmc krmr krrb krrc krri krrk krrm krrr mbci mbim mcbc mcbi mccc mcci mcic mcii mckk mcmc mcmi mcrc mcri mibc micc mici mick micr miii miki mikk mim- mimi mirc miri mirk mirr mmcc mmci mmcm mmic mmii mmmc mmmm mmrc mr-c mrbb mrbm mrcb mrcc mrkr mrmc mrrc rbbb rbbr rbmk rcbc rccb rccc rcic rib- ricc rick riki rikk rimi rimm riri rrkm rrmc rrrr