-er b-u bbb bbc bbe bbr bbs bbt bbu bcb bcc bce bcj bcr bcs bct bcu be- beb bec bee ber bes bet beu bjc bjj bjr bjs bjt bju brb bre brj brr brs brt bru bsb bsc bse bsj bsr bss bst bsu btb btc bte btr bts btt btu bub buc bue buj bur bus but buu c-- c-j cbb cbc cbe cbj cbr cbs cbt cbu ccb ccc cce ccj ccr ccs cct ccu ce- ceb cec cee cej cer ces cet ceu cjb cjc cjr cjs crb crc cre crj crr crs crt cru csb csc cse csj csr css cst csu ctb ctc cte ctr cts ctt ctu cub cuc cue cur cus cut cuu ebb ebc ebe ebj ebr ebs ebt ebu ec- ecb ecc ece ecj ecr ecs ect ecu eeb eec eee eer ees eet ejc ejt eju erb erc ere err ers ert eru es- esb esc ese esr ess est esu etb etc ete etj etr ets ett etu eu- eub euc eue euj eur eus eut jbc jbj jbr jbs jbt jbu jcb jcc jce jcr jcs jct jcu jeb jec jee jej jer jes jet jeu jjb jjc jjj jjr jjs jju jrb jrc jrr jrs jrt jsb jsc jse jsj jsr jss jst jsu jtb jtc jte jtr jts jtt jtu jub jue jur jus jut rbb rbc rbe rbr rbs rbt rbu rcb rcc rce rcj rcr rcs rct rcu re- reb rec ree rer res ret reu rjc rjr rrb rrc rrr rrs rrt rru rsb rsc rse rsj rsr rss rst rsu rtb rtc rte rtj rtr rts rtt rtu rub ruc rue rur rus rut ruu sbb sbc sbe sbj sbr sbs sbt sbu scb scc sce scj scr scs sct scu se- seb sec see sej ser ses set seu sjb sjc sje sjj sjr sjs sjt sju sr- srb src sre srj srr srs srt ss- ssb ssc sse ssj ssr sss sst ssu stb stc ste stj str sts stt stu sub suc sue sur sus sut suu tbb tbc tbe tbj tbr tbs tbt tbu tcb tcc tce tcj tcr tcs tct tcu te- teb tec tee tej ter tes tet teu tjc tje tjr tjs tju trb trc tre trr trs trt tru tsb tsc tse tsj tsr tss tst tsu ttb ttc tte ttr tts ttt ttu tub tuc tue tuj tur tus tut tuu ubb ubc ube ubr ubs ubt ubu ucb ucc uce ucj ucr ucs uct ucu ueb uec uee uer ues uet ujc ujs ur- urb urc ure urr urs urt uru usb usc use usj usr uss ust usu utb utc ute utj utr uts utt utu uuc uue uur uus uut uuu

bbbb bbbs bbeb bbet bbrc bcbc bcbs bccc bccs bcec bcer bces bcet bcrs bcru bcsc bcss bctc bcts bcuc bebb bebe becs becu beeb beej beer bees beet berc bere berr bers bert beru bes- bese bess best betc bete bets bett betu beur bjcc bjec brcb brce breb brec bree brer bres bret brje brrr brrs brsb brsr brst brtc bruc brue brus brut bscs bseb bsec bsee bser bses bset bssc bsse bsts btcc btcs btec btrc btrt btss bttb btus bubb bube bubs bubu bucc buce bucs bucu buer bueu buje buju bur- burb bure burj burr burs burt buru busc buse buss bust busu but- bute buts butt buus cbbc cbbs cbcc cbce cbcr cbcs cbct cbcu cbec cbee cber cbet cbre cbrj cbrt cbsc cbse cbtc cbus ccbc cccb cccc cccs cccu ccee ccrc ccre ccrs ccrt ccss ccst cctb cctc cctt ccuc ccus ccut cebs cebu cec- cece cecs cect ceeb ceec cees cejc cer- cerc cere cers cert cesc cese cesr cess cest cet- cete cets cjbc cjcb cjcj cjcs cjeu cjrb cjrc cjrj cjrs cjru cjsb cjss cjtr crbc crbu crcc crce crcr cre- creb crec cree cres cret creu crrt crss crst crtc crts crub crue crus crut cscb cscc csce cscr cscs csec csee cser cset csrc csrs csse cssr cstc cstr csts csur csus ctbs ctec ctrc ctrs ctsc ctss ctsu ctts cub- cubb cube cubs cucc cuce cuer cues cuju curb cure curr curs curt cusb cuss cust cusu cut- cutc cute cuts cutt ebbc ebbr ebbs ebcc eber ebes ebru ebur ebus ecbc ecbe eccb eccc ecce ecct eces ecjs ecrc ecrr ecru ecsc ecse ecss ecsu ect- ectc ects ecus eecs eeee eees eerc eers eese eetc eete eets eetu ejer erbb erbe ercc erce ereb erec erer eres eret errc erre errs erse erst erts ertu erub eruc erur erus esbs escb esce escr escs escu esee eser eses eset esse esst essu estc este estj estr ests esus etbc etbr etcc etcs etec etee eter etes etre etsu ette ettu eubc euer eur- eurc eure eurt euse jcbc jccc jcrc jcss jcts jebb jebe jecs jeer jees jeet jeju jere jers jert jeru jesc jese jess jest jesu jetb jete jets jett jeur jeus jjcc jrbr jrtc jset jssr jsss jtbc jtcc jtsb jube jubu juce jucu juju jure jurr jurs juse juss just jute juts rbbb rbbr rbbs rbss rbst rcbc rccb rccc rccs rcet rcsc rcss rctc rcts rebb rebe rebs rebu recc rece recr recs rect recu reeb rees reet rere rers rert reru rese ress rest rete retr rets rett reue reus reut reuu rrrr rscc rscs rsee rsre rsts rstu rtcc rtce rtee rtes rtss rtts rubb rube rubs rubu ruce ruct ruer rues ruet rurc rure rurs ruru ruse russ rust rusu rute ruts rutt rutu sbbs sbcc sbcs sbct sber sbse sbst sbtc sbus sccc scce sccs scct scec scee scer scet scr- scrc scre scrs scsc scsr scst scsu sctc sctr scts scub scur scut se-c se-e se-s se-t se-u sebe sebs sebt sec- secc sece secr secs sect secu seeb seec seer sees seet seeu serb serc sere serj serr sers