bbbb bbbs bbch bbeb bbhs bbrc bcbc bcbs bccc bccs bcec bcer bces bche bchs bcrs bcsc bcss bebb bebe bech becs beeb beer bees behr behs berc bere berr bers bes- bese besh bess bhcc bher bhhs brcb brce breb brec bree brer bres brex brhs brrr brrs brsb brsr bscs bseb bsec bsee bser bses bshs bssc bsse cbbc cbbs cbcc cbce cbcr cbcs cbec cbee cber cbhs cbre cbrh cbsc cbse ccbc cccb cccc cccs ccee cche cchr cchs ccrc ccre ccrs ccss cebs cec- cece cecs ceeb ceec cees cehs cer- cerc cere cers cesc cese cesr cess cexe chce chch chcs cheb chec chee cheh cher ches chex chhs chrb chrc chrr chrs chsc chse chsh chsr crbc crcc crce crcr cre- creb crec cree creh cres crex crhs crss cscb cscc csce csch cscr cscs csec csee cseh cser cshs csrc csrs csse cssr cxxx ebbc ebbr ebbs ebcc eber ebes ebhs ecbc ecbe eccb eccc ecce eces eche echs ecrc ecrr ecsc ecse ecss eecs eeee eees eehs eerc eers eese ehcc eheh eher ehhs ehre er-x erbb erbe ercc erce erch ereb erec erer eres erhc erhs errc erre errs erse ersh esbs escb esce esch escr escs esee eser eses eshs esse essh exch exec exer exes exh- exrx hbbs hbes hbhs hbrs hbss hcbc hcbs hccb hccc hcch hccs hchs hcsc hcss hebb hebe hebr hech hecs heeb heer hees hehe hehs herb herc here herr hers hesc hesh hess hex- hexb hexe hhex hhhh hhhs hree hrhs hrrc hsbc hscc hses hshs hsse rbbb rbbr rbbs rbhs rbss rcbc rccb rccc rccs rchb rchs rcsc rcss rebb rebe rebs recc rece rech recr recs reeb rees rehb rehe rehs rere rers rese resh ress rexx rhce rheb rhee rhes rhex rhhs rrhs rrrr rscc rsch rscs rsee rshs rsre rxes sbbs sbcc sbcs sber sbhc sbhs sbse sccc scce sccs scec scee scer sch- sche schh schr schs scr- scrc scre scrs scsc scsh scsr se-c se-e se-h se-s se-x sebe sebs sec- secc sece sech secr secs seeb seec seeh seer sees seex sehe sehr sehs serb serc sere serr sers sesc sese sesh sess sex- sexe shbs shcc she- sheb shee sheh sher shes shhh shhs shre shrs shsc srbc srcc srch sreb srec sres srhs ssbr sscc ssce sscs ssec ssee sses ssex sshs ssrc ssrs sssb sssc sssh ssss xbee xces xeer xer- xers xexe xxxx