b-u bbb bbc bbd bbe bbs bbt bbu bcb bcc bcd bce bcs bct bcu bdb bdc bdd bde bds bdt bdu be- beb bec bed bee bes bet beu bsb bsc bsd bse bss bst bsu btb btc btd bte bts btt btu bub buc bud bue bus but buu c-- cbb cbc cbd cbe cbs cbt cbu ccb ccc ccd cce ccs cct ccu cdb cdc cdd cde cds cdt cdu ce- ceb cec ced cee ces cet ceu csb csc csd cse css cst csu ctb ctc ctd cte cts ctt ctu cub cuc cud cue cus cut cuu dbb dbc dbd dbe dbs dbt dbu dcb dcc dcd dce dcs dct dcu ddb ddc ddd dde dds ddt ddu de- deb dec ded dee des det deu dsb dsc dsd dse dss dst dsu dtb dtc dtd dte dts dtt dtu dub duc dud due dus dut ebb ebc ebd ebe ebs ebt ebu ec- ecb ecc ecd ece ecs ect ecu ed- edb edc edd ede eds edt edu eeb eec eed eee ees eet es- esb esc esd ese ess est esu etb etc etd ete ets ett etu eu- eub euc eud eue eus eut sbb sbc sbd sbe sbs sbt sbu scb scc scd sce scs sct scu sdb sdc sdd sde sds sdt sdu se- seb sec sed see ses set seu ss- ssb ssc ssd sse sss sst ssu stb stc std ste sts stt stu sub suc sud sue sus sut suu tbb tbc tbd tbe tbs tbt tbu tcb tcc tcd tce tcs tct tcu tdb tdc tdd tde tds tdt tdu te- teb tec ted tee tes tet teu tsb tsc tsd tse tss tst tsu ttb ttc ttd tte tts ttt ttu tub tuc tud tue tus tut tuu ubb ubc ube ubs ubt ubu ucb ucc ucd uce ucs uct ucu udb udc udd ude uds udt udu ueb uec ued uee ues uet usb usc usd use uss ust usu utb utc utd ute uts utt utu uuc uue uus uut uuu

bbbb bbbs bbdd bbeb bbet bcbc bcbs bccc bccs bcde bcds bcec bces bcet bcsc bcss bctc bcts bcuc bdbc bddc bdes bdsd bebb bebe becs becu bede beds bedu beeb beed bees beet bes- bese bess best betc bete bets bett betu bsbd bscs bseb bsec bsed bsee bses bset bssc bssd bsse bsts btcc btcs btdt btec btss bttb btus bubb bube bubs bubu bucc buce bucs bucu budb budd bude buds budu bueu busc buse buss bust busu but- bute buts butt buus c-cd cbbc cbbs cbcc cbce cbcs cbct cbcu cbdb cbdc cbds cbec cbee cbet cbsc cbse cbtc cbus ccbc cccb cccc cccs cccu ccdc ccds cced ccee ccsd ccss ccst cctb cctc cctt ccuc ccus ccut cd-e cdcs cddb cdec cdes cdss cebs cebu cec- cece cecs cect cedd cede cedt cedu ceeb ceec cees cesc cese cess cest cet- cete cets cscb cscc cscd csce cscs csdb csec csee cset cssd csse cstc cstd csts csus ctbs ctec ctsc ctss ctsu ctts cub- cubb cube cubs cucc cuce cude cuds cued cues cusb cusd cuss cust cusu cut- cutc cute cuts cutt dbcc dbcs dbss dbtt dbus dcbc dccb dccc dccs dcct dccu dcdb dcds dcsc dcss dctc dcts dddd ddes ddss ddts ddub debe debs debt debu dec- decc decd dece decs dect dedd dede dedu deeb deed dees deet des- desc dese dess dest desu dete dets deue deus deut dsbc dscc dscs dssc dsst dstc dsts dtcc dted dtss dub- dubb dubc dube dubs dubu duce ducs duct dudd dude duds dudu dues duet duse dust dute duts duut ebbc ebbs ebcc ebed ebes ebus ecbc ecbe eccb eccc ecce ecct ecdc eced eces ecsc ecse ecss ecsu ect- ectc ects ecus eddc edde edds ede- edes edss edts educ eecs eede eedu eeee eees eese eetc eete eets eetu esbs escb esce escs escu esds esdu esee eses eset esse esst essu estc estd este ests esus etbc etcc etcs etds etec etee etes etsu ette ettu eubc eucd eude euse sbbs sbcc sbcs sbct sbds sbsd sbse sbst sbtc sbus sccc scce sccs scct scdc scds scec scee scet scsc scsd scst scsu sctc sctd scts scub scud scut sdcc sddc sdds sdes sdet sdsc sdss sdsu se-c se-d se-e se-s se-t se-u sebe sebs sebt sec- secc secd sece secs sect secu sede seds seeb seec seed sees seet seeu sesc sese sess sest set- setc sete sets sett sscc ssce sscs ssdc ssdd ssec ssee sses sset sssb sssc ssss sstb sstc sstd ssts stbc stbd stbs stcc stcs stcu stds stec sted stee stes stet stss sttc sttd stub stuc stud stue stus stut sub- subb subd subs suc- succ sucs sudd sude suds sued suee sues suet sueu sus- susd suse suss sust susu sute sutu suus tbbs tbcb tbcc tbcd tbce tbst tcbs tccc tccu tcdd tctc tcts tddb tdes tdse tdss tebu tecs tect tedd tede teds teec teed tees teet tesc tesd tese tess test tete tets tett tetu teut tsbc tsbd tscc tsdb tsec tses tset tsse tsst tstc tsts ttbb ttss tttt tubb tube tubs tubu tucc tude tudu tues tuet tusc tusd tuss tust tute tuts tutt tutu ubbe ubet ubud ucbc ucdc ucdd uces ucsb ucsc ucsd ucst ucsu ucut udbc udds udet udsd udts uess usbc usbe usbs uscc usce uscs usdc usde usds usdt used usee uses uset ussb ussc usse usss usst ussu ustb ustc uste usts usus utec utes utsc uttu uuuu

b-e-d bbbee bbuss bcbst bcced bdsec bdubs bebed bebes becue becut bedde bedee bedes bedet bedse bedub bedue beebe beebs beede beesd beest beete beets beeut besed besee beset besse beste bests besut betee betes bett- bette betts betus beust beute bseed btc-e btstu bubbe buces bucet bucsu budde budds buddu budec bused buses busse bussu buste busts busut busuu butec butes butte