-er b-u bbb bbc bbe bbl bbm bbr bbs bbt bbu bcb bcc bce bcl bcm bcr bcs bct bcu be- beb bec bee bel bem ber bes bet beu blb blc ble bll blm blr bls blt blu bmb bmc bme bml bmm bmr bms bmt bmu brb bre brl brm brr brs brt bru bsb bsc bse bsl bsm bsr bss bst bsu btb btc bte btl btm btr bts btt btu bub buc bue bul bum bur bus but buu c-- cbb cbc cbe cbl cbm cbr cbs cbt cbu ccb ccc cce ccl ccm ccr ccs cct ccu ce- ceb cec cee cel cem cer ces cet ceu cl- clb clc cle cll clm clr cls clt clu cmb cmc cme cml cmm cmr cms cmt cmu crb crc cre crl crm crr crs crt cru csb csc cse csl csm csr css cst csu ctb ctc cte ctl ctm ctr cts ctt ctu cub cuc cue cul cum cur cus cut cuu ebb ebc ebe ebl ebm ebr ebs ebt ebu ec- ecb ecc ece ecl ecm ecr ecs ect ecu eeb eec eee eel eem eer ees eet elb elc ele ell elm elr els elt elu em- emb emc eme eml emm emr ems emt emu erb erc ere erl erm err ers ert eru es- esb esc ese esl esm esr ess est esu etb etc ete etl etm etr ets ett etu eu- eub euc eue eul eur eus eut lbb lbc lbe lbl lbm lbr lbs lbt lbu lcb lcc lce lcl lcm lcr lcs lct lcu leb lec lee lel lem ler les let leu llb llc lle lll llm llr lls llt llu lmb lmc lme lml lmm lmr lms lmt lmu lrb lrc lrm lrr lrs lrt lru lsb lsc lse lsl lsm lsr lss lst lsu ltb ltc lte ltl ltm ltr lts ltt ltu lub luc lue lul lum lur lus lut luu m-r mbb mbc mbe mbl mbm mbr mbs mbt mbu mc- mcb mcc mce mcl mcm mcr mcs mct mcu meb mec mee mel mem mer mes met meu mlb mlc mle mll mlm mlr mls mlt mlu mmb mmc mme mml mmm mmr mms mmt mmu mrb mrc mre mrl mrm mrr mrs mrt mru msb msc mse msl msm msr mss mst msu mtb mtc mte mtl mtm mtr mts mtt mtu mub muc mue mul mum mur mus mut muu rbb rbc rbe rbl rbm rbr rbs rbt rbu rcb rcc rce rcl rcm rcr rcs rct rcu re- reb rec ree rel rem rer res ret reu rlc rle rll rlm rlr rls rlt rlu rmb rmc rme rml rmm rmr rms rmt rrb rrc rrl rrm rrr rrs rrt rru rsb rsc rse rsl rsm rsr rss rst rsu rtb rtc rte rtl rtm rtr rts rtt rtu rub ruc rue rum rur rus rut ruu sbb sbc sbe sbl sbm sbr sbs sbt sbu scb scc sce scl scm scr scs sct scu se- seb sec see sel sem ser ses set seu slb slc sle sll slm slr sls slt slu smb smc sme sml smm smr sms smt smu sr- srb src sre srl srm srr srs srt ss- ssb ssc sse ssl ssm ssr sss sst ssu stb stc ste stl stm str sts stt stu sub suc sue sul sum sur sus sut suu tbb tbc tbe tbl tbm tbr tbs tbt tbu tcb tcc tce tcl tcm tcr tcs tct tcu te- teb tec tee tel tem ter tes tet teu tlc tle tll tlm tlr tls tlt tlu tmb tmc tme tml tmm tmr tms tmt tmu trb trc tre trl trm trr trs trt tru tsb tsc tse tsl tsm tsr tss tst tsu ttb ttc tte ttl ttm ttr tts ttt ttu tub tuc tue tul tum tur tus tut tuu ubb ubc ube ubl ubr ubs ubt ubu ucb ucc uce ucl ucm ucr ucs uct ucu ueb uec uee uel uem uer ues uet ulb ulc ule ull ulm ulr uls ult ulu um- umb umc ume uml umm umr ums umt umu ur- urb urc ure url urm urr urs urt uru usb usc use usl usm usr uss ust usu utb utc ute utl utm utr uts utt utu uuc uue uum uur uus uut uuu

bbbb bbbs bbcm bbeb bbet bblb bbls bbrc bcbc bcbs bccc bccl bccm bccs bcec bcer bces bcet bcms bcrs bcru bcsc bcsl bcsm bcss bctc bcts bcuc bebb bebe becs becu beeb beel beem beer bees beet bele bell belm bels belt belu beme bemu berc bere berm berr bers bert beru bes- bese besm bess best betc bete bets bett betu beur blbt blcu bleb blee blem bles blet bleu blls blme blrc blss blst blts blub blue blum blur blus blut bmce bmtc bmts bmus brcb brce breb brec bree brel brem brer bres bret brls brmc brrm brrr brrs brsb brsr brst brtc bruc brue brum brus brut bscs bseb bsec bsee bser bses bset bslc bsms bsmt bsrm bssc bsse bssm bsts btcc btcl btcs btec btrc btrt btss bttb btus bubb bube bubs bubu bucc buce bucs bucu buel buem buer bueu bulb bule bull buls bult bulu bum- bumb bums bur- burb bure burl burm burr burs burt buru busc buse buss bust busu but- bute buts butt buus cbbc cbbs cbcc cbce cbcl cbcm cbcr cbcs cbct cbcu cbec cbee cber cbet cblb cblc cbme cbms cbre cbrl cbrm cbrt cbsc cbse cbsm cbtc cbtl cbus ccbc cccb cccc cccl cccm cccs cccu ccee ccel cclc cclm ccls ccmb ccmc ccmm ccms ccrc ccre ccrl ccrs ccrt ccsl ccss ccst cctb cctc cctl cctt ccuc ccus ccut cebs cebu cec- cece cecm cecs cect ceeb ceec ceel ceem cees cel- celc cele cell cels celt cemb ceme cemm cemr cems cemu cer- cerc cere cerl cers cert cesc cese cesr