-er b-p bbb bbc bbe bbh bbn bbp bbr bbs bcb bcc bce bch bcn bcp bcr bcs be- beb bec bee beh ben bep ber bes bhb bhc bhe bhh bhp bhr bhs bnb bnc bne bnn bnp bnr bns bpb bpc bpe bph bpn bpp bpr bps brb bre brh brn brp brr brs bsb bsc bse bsh bsn bsp bsr bss c-- cbb cbc cbe cbh cbn cbp cbr cbs ccb ccc cce cch ccn ccp ccr ccs ce- ceb cec cee ceh cen cep cer ces ch- chb chc che chh chn chp chr chs cn- cnb cnc cne cnh cnn cnp cnr cns cpb cpc cpe cph cpn cpp cpr cps crb crc cre crh crn crp crr crs csb csc cse csh csn csp csr css ebb ebc ebe ebh ebn ebp ebr ebs ec- ecb ecc ece ech ecn ecr ecs eeb eec eee een eep eer ees ehb ehc ehe ehh ehn ehp ehr ehs en- enb enc ene enh enn enp enr ens ep- epb epc epe eph epn epp epr eps erb erc ere erh ern erp err ers es- esb esc ese esh esn esp esr ess hbb hbc hbe hbh hbn hbp hbr hbs hcb hcc hce hch hcn hcp hcr hcs he- heb hec hee heh hen hep her hes hhb hhc hhe hhh hhn hhp hhr hhs hnb hnc hne hnh hnn hns hpb hpc hpe hph hpn hpp hpr hps hr- hrb hrc hre hrh hrn hrp hrr hrs hsb hsc hse hsh hsn hsp hsr hss nbb nbc nbe nbn nbp nbr nbs ncb ncc nce nch ncn ncp ncr ncs ne- neb nec nee neh nen nep ner nes nhb nhc nhe nhh nhn nhp nhr nhs nnb nnc nne nnh nnn nnp nns npb npc npe nph npn npp npr nps nrb nrc nre nrn nrp nrr nrs nsb nsc nse nsh nsn nsp nsr nss p-p pbb pbc pbe pbn pbp pbr pbs pcb pcc pce pch pcn pcp pcr pcs peb pec pee peh pen pep per pes phb phc phe phn php phr phs pn- pnb pnc pne pnh pnn pnp pnr pns ppb ppc ppe pph ppn ppp ppr pps prb prc pre prh prn prp prr prs ps- psb psc pse psh psn psp psr pss rbb rbc rbe rbh rbn rbp rbr rbs rcb rcc rce rch rcn rcp rcr rcs re- reb rec ree reh ren rep rer res rh- rhb rhc rhe rhh rhn rhp rhr rhs rnb rnc rnh rnn rnp rnr rns rpb rpc rpe rph rpn rpp rpr rps rrb rrc rrh rrn rrp rrr rrs rsb rsc rse rsh rsn rsp rsr rss sbb sbc sbe sbh sbn sbp sbr sbs scb scc sce sch scn scp scr scs se- seb sec see seh sen sep ser ses sh- shb shc she shh shn shp shr shs snb snc sne snn snp snr sns spb spc spe sph spn spp spr sps sr- srb src sre srh srn srp srr srs ss- ssb ssc sse ssh ssn ssp ssr sss

-ene bbbb bbbs bbch bbeb bbhs bbpr bbrc bcbc bcbp bcbs bccc bccs bcec bcer bces bche bchs bcpp bcps bcrs bcsc bcsn bcss bebb bebe bech becs beeb been beep beer bees behn behr behs bene benn bens berc bere bern berr bers bes- bese besh bess bhcc bher bhhs bner bnhs bnpp bnrr bnss bpcp bphc bphs bprc brcb brce breb brec bree bren brep brer bres brhs brns brrr brrs brsb brsr bscp bscs bseb bsec bsee bser bses bshs bsns bspp bspr bssc bsse cbbc cbbs cbcc cbce cbcn cbcp cbcr cbcs cbec cbee cber cbhs cbpc cbpp cbre cbrh cbrn cbsc cbse cbsn ccbc ccbn cccb cccc cccp cccs ccee cche cchp cchr cchs ccnb ccnc ccne ccnp ccnr ccns ccpe ccpn ccpp ccpr ccps ccrc ccre ccrp ccrs ccsn ccsp ccss cebp cebs cec- cece cecp cecs ceeb ceec cees cehs cen- cene cens cepc cepe ceph cepp cepr ceps cer- cerc cere cern cerp cers cesc cese cesp cesr cess chbp chce chch chcp chcs cheb chec chee cheh chen chep cher ches chhs chnb chnc chnr chns chpp chpr chrb chrc chrn chrp chrr chrs chsc chse chsh chsr cnbc cnbp cncp cnep cnes cnhs cnrc cnrr cnss cpbc cpce cpcs cpeb cpep cper cphs cpnb cpns cpps cpre cprs cpsc cpsr crbc crcc crce crcr cre- creb crec cree creh cren crep cres crhs crne crns crpc crps crsp crss cscb cscc csce csch cscr cscs csec csee cseh csep cser cshp cshs csne csnp cspb cspc cspe csps csrc csrs csse cssr ebbc ebbr ebbs ebcc eben eber ebes ebhs ecbc ecbe eccb eccc ecce eces eche echs ecne ecpp ecrc ecrr ecsc ecse ecsp ecss eecs eeee eees eehs eens eeps eerc eers eese ehcc eheh ehen eher ehhs ehre enb- enbn enbr ence ench encs enee ener enes enhs ennc enne enns enp- enrs ense epcc epch epec epee epen eper epes eph- ephs epns eppc eppp epps eprb eprp eprs epsc epsp epss erbb erbe ercc erce erch ercp ereb erec eren erer eres erhc erhs erne erns erpe erps errc erre errs erse ersh esbs escb esce esch escr escs esee esen eser eses eshs esne espc espe espn espp esps esse essh essp hbbs hbes hbhs hbrs hbss hcbc hcbs hccb hccc hcch hccs hchs hcpc hcps hcrp hcsc hcss hebb hebe hebr hech hecs heeb heep heer hees hehe hehn hehs hene henh henn hens hepc hepe hepp heps herb herc here hern herp herr hers hesc hesh hesp hess hhhh hhhs hhpc hnce hncs hnhs hpcc hphs hppe hpps hpsc hpse hpss hree hrhs hrpc hrpp hrps hrrc hsbc hscc hscn hses hshs hsps hsse hssp nbbc nbcc nbcs nber nbhs nbpp nbps nbsp ncbc ncbs nccc nccn nccp nccr nccs ncec ncee ncen ncep ncer nces nchc nchs ncnc ncpc ncrc ncre