-er -ic b-p bbb bbc bbe bbi bbp bbr bbs bcb bcc bce bci bcp bcr bcs be- beb bec bee bei bep ber bes bi- bib bic bie bii bip bir bis bpb bpc bpe bpi bpp bpr bps brb bre bri brp brr brs bsb bsc bse bsi bsp bsr bss c-- cbb cbc cbe cbi cbp cbr cbs ccb ccc cce cci ccp ccr ccs ce- ceb cec cee cei cep cer ces ci- cib cic cie cii cip cir cis cpb cpc cpe cpi cpp cpr cps crb crc cre cri crp crr crs csb csc cse csi csp csr css ebb ebc ebe ebi ebp ebr ebs ec- ecb ecc ece eci ecr ecs eeb eec eee eep eer ees eib eic eie eii eip eir eis ep- epb epc epe epi epp epr eps erb erc ere eri erp err ers es- esb esc ese esi esp esr ess ibb ibc ibe ibi ibp ibr ibs icb icc ice ici icp icr ics ie- iec iee iei iep ier ies iib iic iie iii iip iir iis ipb ipc ipe ipi ipp ipr ips ir- irb irc ire iri irp irr irs is- isb isc ise isi isp isr iss p-p pbb pbc pbe pbi pbp pbr pbs pcb pcc pce pci pcp pcr pcs peb pec pee pei pep per pes pib pic pie pii pip pir pis ppb ppc ppe ppi ppp ppr pps prb prc pre pri prp prr prs ps- psb psc pse psi psp psr pss rbb rbc rbe rbi rbp rbr rbs rcb rcc rce rci rcp rcr rcs re- reb rec ree rei rep rer res rib ric rie rii rip rir ris rpb rpc rpe rpi rpp rpr rps rrb rrc rri rrp rrr rrs rsb rsc rse rsi rsp rsr rss sbb sbc sbe sbi sbp sbr sbs scb scc sce sci scp scr scs se- seb sec see sei sep ser ses sib sic sie sii sip sir sis spb spc spe spi spp spr sps sr- srb src sre sri srp srr srs ss- ssb ssc sse ssi ssp ssr sss

bbbb bbbs bbci bbeb bbpr bbrc bcbc bcbp bcbs bccc bcci bccs bcec bcer bces bcie bcis bcpp bcps bcrs bcsc bcss bebb bebe bebi beci becs beeb beep beer bees beic beir beis berc bere beri berr bers bes- bese bess bibb bibe bibi bibs bicc bice bici bics bieb bier bies biis bipp bips birb bire biri birr birs bis- bisc bise bisp biss bpcp bprc brcb brce breb brec bree brei brep brer bres bric brie bris brrr brrs brsb brsr bsci bscp bscs bseb bsec bsee bser bses bsic bspp bspr bssc bsse cbbc cbbs cbcc cbce cbcp cbcr cbcs cbec cbee cber cbir cbpc cbpp cbre cbsc cbse cbsi ccbc cccb cccc ccci cccp cccs ccee ccic ccii ccip ccir ccis ccpe ccpp ccpr ccps ccrc ccre ccri ccrp ccrs ccsi ccsp ccss cebp cebs cec- cece ceci cecp cecs ceeb ceec cees ceip cepc cepe cepp cepr ceps cer- cerc cere ceri cerp cers cesc cese cesi cesp cesr cess cibc cibe cibi cicc cici cicr cics ciee cier cies ciii ciis cipp cips cirb circ cire ciri cirr cirs cis- cisc cise cisp cisr ciss cpbc cpce cpcs cpeb cpep cper cpic cpps cpre cpri cprs cpsc cpsr crbc crcc crce crcr cre- creb crec cree crei crep cres crib cric crie crip cris crpc crps crsp crss cscb cscc csce csci cscr cscs csec csee csep cser csib csir csis cspb cspc cspe cspi csps csrc csrs csse cssr ebbc ebbr ebbs ebcc eber ebes ebic ebis ecbc ecbe eccb eccc ecce ecci eces ecib ecip ecis ecpp ecrc ecri ecrr ecsc ecse ecsp ecss eecs eeee eees eeps eerc eers eese eesi eics eiec eiei eier eies eipr eire eirs eise eiss epcc epci epec epee eper epes epi- epic epie epip epis eppc eppp epps eprb eprp eprs epsc epsi epsp epss erbb erbe ercc erce ercp ereb erec erei erer eres eric erie eris erpe erps errc erre errs erse ersi esbs escb esce esci escr escs esee eser eses esie esis espc espe espi espp esps esri esse essi essp i-be ibcs ibec ibes ibie ibis ibrc ibri ibss icbc icbp icbs iccb iccc icci iccp iccr iccs icec icee icer ices icis icpc icps icrc icre icrr icrs icsb icsc icse icsi icsp icsr icss iecc ieie iere ieri iers iesc iesi iesr iies iiie iiii iiis iirc iirs iisc iisi iisp iisr ipcc ipce ipcs ipec iper ipes ipie ippc ippr ipri ipsc ipse ipsi ipsp ipss irbe irbp ircc ircs iree irer ires iri- iric irie irip iris irpc irpe irps irrc irre irri irrs irse irsp isbe iscc isci iscp iscr iscs iseb isec isee isep iser ises isic isie isis ispc ispe ispr isps isri isrp issc isse issi issp issr isss pbcc pbrs pbsp pcbc pcbs pccc pcce pccs pcep pcer pcip pcpb pcpp pcps pcrc pcre pcse pece peci pecr pecs peec peep peer pees peip peir peis pepe pepi peps per- perc pere peri perp perr pers pese pesi pess pibb pibi picc pice pici picr pics piep pier pies piip pipe pipi pipp pips pirc pire piri pirr pirs pise pisi piss ppcc ppci ppcs pper ppib ppic ppie pppp ppps pprc ppss prbc prbs prcc prcp prcs pre- preb prec pree prep pres pri- prie prii pris prps prri prrs prsc prse prsi prss psbr psci pseb psec psei psip psis pspi pspp pspr psps psrp pssc psse rbbb rbbr rbbs rbis rbsp rbss rcbc rccb rccc rccs rcep rcic rcis rcpi rcps rcsc rcsi rcss rebb rebe rebs recc rece reci recp recr recs reeb reep rees reii reir reis repe repi repp repr reps rere reri rers rese resi resp ress rib- ribe ribs ricc rice rics riep rier ries riis ripe ripi ripp ripr rips rire riri