bbbb bbci bbeb bbet bbwc bcbc bccc bcci bcec bcet bcie bcit bctc bebb bebe bebi beci beeb beet beic beit betc bete beti bett betw bewe bibb bibe bibi bicc bice bici bieb biet bitc bite bitt biw- btcc btec btie bttb btwc cbbc cbcc cbce cbct cbec cbee cbet cbit cbtc ccbc cccb cccc ccci ccee ccic ccii cciw cctb cctc cctt cec- cece ceci cect ceeb ceec cet- cete ceti cewe cibc cibe cibi cicc cici cict ciee ciii ciit citb cite citi citt ciww ctbi ctec ctic cttw cweb ebbc ebbw ebcc ebic ebit ecbc ecbe eccb eccc ecce ecci ecct ecib ecit ect- ectc eeee eetc eete eiec eiei eitb eitc eiti etbc etcc etec etee etic ette etti ewew ewte i-be ibec ibet ibew ibie ibtb ibtc ibwc icbc iccb iccc icci icct icec icee icet icew iecc ieet ieie iett iiie iiii iiit iitt iiwi itbe itec itet itic itie itwe iwcc iwce iweb iwie iwiw tbcb tbcc tbce tbit tccc tctc tect teec teet teic teie tete teti tett tibi ticc tice tie- tiee tiei tiet tiew tiit titc tite titi titt tiwi ttbb tttt twbt twee twei twi- twib twic twie twit wbbb wbbe wbbi wbbt wbbw wbcb wbce wbci wbct wbcw wbeb wbec wbei wbet wbew wbib wbic wbie wbiw wbtc wbte wbti wbtt wbtw wbwb wbwc wbwi wbwt wcbc wcbe wcbt wcbw wccb wccc wcce wcci wcct wccw wceb wcec wcee wcet wcib wcic wcie wcii wcit wctb wctc wcte wcti wctt wctw wcwb wcwc wcwi webb webc webe webt wecb wecc weci wect wecw weeb weec weei weet weib weic weie weii weit wetb wetc wete wett wewc wewe wibb wibc wibi wibt wibw wicb wicc wice wici wiii wiit witc wite witi witt wiwi wtbb wtbc wtbi wtcb wtcc wtci wtct wtcw wtib wtic wtie wttb wttc wtte wtti wttt wttw wtwb wtwt wtww wwbb wwbc wwbt wwcb wwct wwcw wweb wwec wwei wwet wwib wwii wwtc wwti wwtw wwwc wwwe wwwi wwww