bbbb bbbs bbeb bbfc bbrc bcbc bcbs bccc bccs bcec bcer bces bcfc bcrs bcru bcsc bcss bcuc bebb bebe beby becs becu beeb beef beer bees beey befe beff berc bere berr bers beru bery bes- bese bess besy beur beye beys bfcs bffs bfsr brcb brce breb brec bree bref brer bres brey brfc brfu brrr brrs brsb brsr bruc brue brus bry- brye bscs bseb bsec bsee bser bses bsfc bsff bsfs bssc bsse bubb bube bubs bubu bucc buce bucs bucu buer bueu bufc bufe buff bufr bur- burb bure burr burs buru bury busc buse buss busu busy buus buys buyu byce byer byes byre bysb byse byss bysy cbbc cbbs cbcc cbce cbcr cbcs cbcu cbec cbee cbef cber cbfb cbfc cbre cbry cbsc cbse cbus ccbc cccb cccc cccf cccs cccu ccee ccfc ccff ccrc ccre ccrf ccrs ccsf ccss ccuc ccus cebs cebu cec- cece cecs ceeb ceec cees cef- cefc cer- cerc cere cerf cers cery cesc cese cesr cess ceys ceyu cfbc cfbr cfbs cfcb cfcf cfcs cfcy cffb cffr cfrb cfre cfry cfse crbc crbu crcc crce crcr cre- creb crec cree cres creu crfc crfs crss crub crue crus cry- cryb crys csbf cscb cscc csce cscf cscr cscs csec csee cser csfc csfr csrc csrs csse cssr csuf csur csus csys cub- cubb cube cubs cuby cucc cuce cuer cues cufc cuff curb cure curf curr curs cury cusb cuss cusu cusy cuy- cuyr cybb cybc cyc- cycb cycc cycs cyfe cyfs cyre cyrs cyse cyy- cyyc ebbc ebbr ebbs ebby ebcc eber ebes ebfc ebru ebur ebus ecbc ecbe eccb eccc ecce ecef eces ecfc ecfr ecfs ecrc ecrf ecrr ecru ecsc ecse ecss ecsu ecus eeby eecs eeee eees eefe eerc eers eery eese eesy efbr efes effs effy erbb erbe ercc erce ereb erec erer eres erfc erfs errc erre errs erse erub eruc erur erus eryc erye esbs escb esce escr escs escu esee eser eses esfs esse essu essy esuf esus eubc euer eufc eur- eurc eure eury euse eyeb eyec eyer eyes eyey eyre eyry eyse eyyr fbrs fbus fcbs fccf fces fcsc febs fece feeb feer fees fefc fefe feff ferb ferc fere ferr fers feru fery fese fess feus feyr feys ffcc ffee ffff ffrr ffss frbc frcc free fres frey frfc frsb frsc frub frue frye frys fscb fscc fsec fssc fssf fubb fubs fubu fuc- fufc fuff fufu fur- fure furr furs fury fusc fuse fuss fusu fuyu fyce fyfe fyre fyrs fyry rbbb rbbr rbbs rbss rcbc rccb rccc rccs rcfc rcsc rcss rcyc rebb rebe rebs rebu recc rece recr recs recu recy reeb reef rees refe reff refr refs refu rere rers reru rery rese ress reue reuf reus reuu reye reys rfef rffc rrfc rrrr rscc rscs rscy rsee rsfc rsre rubb rube rubs rubu ruby ruce ruer rues rufc rufe ruff rurc rure rurs ruru ruse russ rusu rusy ruys rybe ryeb ryes ryfe ryff rysy ryue ryyf sbbs sbcc sbcs sbef sber sbfc sbse sbus sccc scce sccs sccy scec scee scer scey scfc scfe scr- scrc scre scrs scry scsc scsr scsu scub scur scye se-c se-e se-f se-s se-u se-y sebe sebs seby sec- secc sece secr secs secu secy seeb seec seef seer sees seeu seey seff serb serc sere serf serr sers seru sery sesc sese sess seur seye seyf seys sfbc sfcc sfcs sfer sffc sfrc sfss sfsu srbc srby srcc sreb srec sres srfc srub ssbr ssby sscc ssce sscs ssec ssee sses ssfc ssrc ssrs sssb sssc sssf ssss sub- subb subs suc- succ sucr sucs suee suer sues sueu suey suf- sufc suff sufr sufs sufu sur- surc sure surf surr surs suru sury sus- suse suss susu susy suus suyr suyu syce sycr syer syes syfe syff syfy syre syrs syry syse syss syue ubbe uber ucbc uces ucfb ucrc ucsb ucsc ucsf ucsu uers uess ueys ufcu ufer uffe urbe urbs urcy ure- ures urey urfe urff urre urry urse urss ursu ursy urur urus usbc usbe usbr usbs uscc usce uscf uscs usee usef user uses usfc usfs ussb ussc usse ussf ussr usss ussu ussy usus uuuu uyre ybbs yber ybry yccc ycee ycsb ye-u yeer yees yefe yeff yerb yere yerr yers yery yess yesu yeue yeye yeyr ysby ysee yser yses ysse yssu ysue ysyb yubu yuce yuer yuff yufu yure yury yuye yuyu yyfe yyff yyyy