-er bbb bbc bbe bbl bbm bbn bbr bbs bcb bcc bce bcl bcm bcn bcr bcs be- beb bec bee bel bem ben ber bes blb blc ble bll blm bln blr bls bmb bmc bme bml bmm bmn bmr bms bnb bnc bne bnl bnn bnr bns brb bre brl brm brn brr brs bsb bsc bse bsl bsm bsn bsr bss c-- cbb cbc cbe cbl cbm cbn cbr cbs ccb ccc cce ccl ccm ccn ccr ccs ce- ceb cec cee cel cem cen cer ces cl- clb clc cle cll clm cln clr cls cmb cmc cme cml cmm cmn cmr cms cn- cnb cnc cne cnl cnm cnn cnr cns crb crc cre crl crm crn crr crs csb csc cse csl csm csn csr css ebb ebc ebe ebl ebm ebn ebr ebs ec- ecb ecc ece ecl ecm ecn ecr ecs eeb eec eee eel eem een eer ees elb elc ele ell elm eln elr els em- emb emc eme eml emm emn emr ems en- enb enc ene enl enm enn enr ens erb erc ere erl erm ern err ers es- esb esc ese esl esm esn esr ess lbb lbc lbe lbl lbm lbr lbs lcb lcc lce lcl lcm lcn lcr lcs leb lec lee lel lem len ler les llb llc lle lll llm lln llr lls lmb lmc lme lml lmm lmn lmr lms lnb lnc lne lnl lnm lnn lnr lns lrb lrc lrm lrn lrr lrs lsb lsc lse lsl lsm lsn lsr lss m-r mbb mbc mbe mbl mbm mbr mbs mc- mcb mcc mce mcl mcm mcn mcr mcs meb mec mee mel mem men mer mes mlb mlc mle mll mlm mln mlr mls mmb mmc mme mml mmm mmn mmr mms mnb mnc mne mnl mnm mnn mnr mns mrb mrc mre mrl mrm mrn mrr mrs msb msc mse msl msm msn msr mss nbb nbc nbe nbl nbm nbn nbr nbs ncb ncc nce ncl ncm ncn ncr ncs ne- neb nec nee nel nem nen ner nes nlb nlc nle nll nlm nln nlr nls nmb nmc nme nml nmm nmn nmr nms nnb nnc nne nnl nnm nnn nns nrb nrc nre nrl nrm nrn nrr nrs nsb nsc nse nsl nsm nsn nsr nss rbb rbc rbe rbl rbm rbn rbr rbs rcb rcc rce rcl rcm rcn rcr rcs re- reb rec ree rel rem ren rer res rlc rle rll rlm rln rlr rls rmb rmc rme rml rmm rmn rmr rms rnb rnc rnm rnn rnr rns rrb rrc rrl rrm rrn rrr rrs rsb rsc rse rsl rsm rsn rsr rss sbb sbc sbe sbl sbm sbn sbr sbs scb scc sce scl scm scn scr scs se- seb sec see sel sem sen ser ses slb slc sle sll slm sln slr sls smb smc sme sml smm smn smr sms snb snc sne snl snm snn snr sns sr- srb src sre srl srm srn srr srs ss- ssb ssc sse ssl ssm ssn ssr sss

-ene bbbb bbbs bbcm bbeb bblb bbls bbrc bcbc bcbs bccc bccl bccm bccs bcec bcer bces bcms bcrs bcsc bcsl bcsm bcsn bcss bebb bebe becs beeb beel beem been beer bees bele bell belm bels beme bene benn bens berc bere berm bern berr bers bes- bese besm bess bleb blee blem bles blls blme blrc blss bmce bner bnml bnrr bnss brcb brce breb brec bree brel brem bren brer bres brls brmc brns brrm brrr brrs brsb brsr bscs bseb bsec bsee bser bses bslc bsms bsns bsrm bssc bsse bssm cbbc cbbs cbcc cbce cbcl cbcm cbcn cbcr cbcs cbec cbee cber cblb cblc cbln cbme cbms cbre cbrl cbrm cbrn cbsc cbse cbsm cbsn ccbc ccbn cccb cccc cccl cccm cccs ccee ccel cclc cclm ccls ccmb ccmc ccmm ccms ccnb ccnc ccne ccnm ccnr ccns ccrc ccre ccrl ccrs ccsl ccsn ccss cebs cec- cece cecm cecs ceeb ceec ceel ceem cees cel- celc cele cell cels cemb ceme cemm cemr cems cen- cene cens cer- cerc cere cerl cern cers cesc cese cesr cess clec clee clem cler cles clrs clsc clsm cmbc cmbs cmcc cmcs cmec cmes cmll cmmb cmmc cmml cmmn cmms cmrn cmrr cmrs cmsc cmse cmsn cnbc cnbl cnbm cnel cnes cnrc cnrr cnsl cnss crbc crcc crce crcr cre- creb crec cree crem cren cres crls crmb crmn crms crne crns crss csbm cscb cscc csce cscl cscr cscs csec csee csem cser cslr csmc csne csrc csrs csse cssm cssr e-cl ebbc ebbr ebbs ebcc ebel eben eber ebes ecbc ecbe eccb eccc ecce eccl eccm ecem eces ecne ecrc ecrl ecrm ecrr ecsc ecse ecss eecs eeee eees eele eels eems eens eerc eers eese el-b elbe elcb elce elec elee elem elen eler eles elle ells elme elml elms elne else embe embr embs emcc emcn emcs emel emen emer emes emle emlm emme emml emms emne emre emrs emse enb- enbn enbr ence encl encs enee enel enem ener enes enls ennc enne enns enrs ense erbb erbe ercc erce ereb erec erel erem eren erer eres erle erll ermc erme erms erne erns errc erre errs erse esbs escb esce escm escr escs esee esel esem esen eser eses esme esmr esne esse essl lbcc lblr lbmc lbms lbrs lbsc lcbc lccc lcce lccm lccs lcer lces lcls lcms lcrl lcrs lcsc lcsr lece leel leem leen leer lees lele lell leme lemm lems lene lenn lens lerc lere lerm lern lese less llbs llcc llcs lles lllc llll llms lmcc lmln lmmr lmms lmrs lmsr lncr lner lnes lrcs lrmc lrne lrrc lrrr lrse lrsm ls-r lscb lscm lscs lses lsrc lssr mbbs mbcs mbes mbms mbrs mbsl mcbc mccc mccl mces mcmc mcml mcrc mcse mcss mebe mec- mecc mece mecr mecs meel meem meen meer mees mel- melb melc mele mell