bbbb bbbs bbeb bblb bbls bbrc bcbc bcbs bccc bccl bccs bcec bcer bces bcrs bcsc bcsl bcss bebb bebe becs beeb beel beer bees bele bell bels berc bere berr bers bes- bese bess bleb blee bles blls blrc blss brcb brce breb brec bree brel brer bres brls brrr brrs brsb brsr bscs bseb bsec bsee bser bses bslc bssc bsse cbbc cbbs cbcc cbce cbcl cbcr cbcs cbec cbee cber cblb cblc cbre cbrl cbsc cbse ccbc cccb cccc cccl cccs ccee ccel cclc ccls ccrc ccre ccrl ccrs ccsl ccss cebs cec- cece cecs ceeb ceec ceel cees cel- celc cele cell cels cer- cerc cere cerl cers cesc cese cesr cess clec clee cler cles clrs clsc crbc crcc crce crcr cre- creb crec cree cres crls crss cscb cscc csce cscl cscr cscs csec csee cser cslr csrc csrs csse cssr e-cl ebbc ebbr ebbs ebcc ebel eber ebes ecbc ecbe eccb eccc ecce eccl eces ecrc ecrl ecrr ecsc ecse ecss eecs eeee eees eele eels eerc eers eese el-b elbe elcb elce elec elee eler eles elle ells else erbb erbe ercc erce ereb erec erel erer eres erle erll errc erre errs erse esbs escb esce escr escs esee esel eser eses esse essl lbcc lblr lbrs lbsc lcbc lccc lcce lccs lcer lces lcls lcrl lcrs lcsc lcsr lece leel leer lees lele lell lerc lere lese less llbs llcc llcs lles lllc llll lrcs lrrc lrrr lrse ls-r lscb lscs lses lsrc lssr rbbb rbbr rbbs rbcl rble rbsl rbss rcbc rccb rccc rccs rcle rcls rcsc rcsl rcss rebb rebe rebs recc rece recr recs reeb reel rees relb rele rell rels rere rers rese ress rlcs rlee rlls rrle rrrr rscc rscs rsee rslc rsre rssl sbbs sbcc sbcs sber sbse sccc scce sccl sccs scec scee scel scer scl- sclc scls scr- scrc scre scrs scsc scsl scsr se-c se-e se-s sebe sebs sec- secc sece secr secs seeb seec seel seer sees selb sele sell sels serb serc sere serr sers sesc sese sess slcc sleb slee sler sles slrc slre slrs slsc srbc srcc sreb srec sres ssbr sscc ssce sscs ssec ssee sses sslc ssle ssrc ssrl ssrs sssb sssc ssss