-er -ic -up b-p b-u bbb bbc bbe bbi bbp bbr bbs bbu bcb bcc bce bci bcp bcr bcs bcu be- beb bec bee bei bep ber bes beu bi- bib bic bie bii bip bir bis biu bpb bpc bpe bpi bpp bpr bps bpu brb bre bri brp brr brs bru bsb bsc bse bsi bsp bsr bss bsu bub buc bue bui bup bur bus buu c-- cbb cbc cbe cbi cbp cbr cbs cbu ccb ccc cce cci ccp ccr ccs ccu ce- ceb cec cee cei cep cer ces ceu ci- cib cic cie cii cip cir cis ciu cpb cpc cpe cpi cpp cpr cps cpu crb crc cre cri crp crr crs cru csb csc cse csi csp csr css csu cub cuc cue cui cup cur cus cuu ebb ebc ebe ebi ebp ebr ebs ebu ec- ecb ecc ece eci ecr ecs ecu eeb eec eee eep eer ees eib eic eie eii eip eir eis eiu ep- epb epc epe epi epp epr eps epu erb erc ere eri erp err ers eru es- esb esc ese esi esp esr ess esu eu- eub euc eue eui eup eur eus ibb ibc ibe ibi ibp ibr ibs ibu icb icc ice ici icp icr ics icu ie- iec iee iei iep ier ies iib iic iie iii iip iir iis iiu ipb ipc ipe ipi ipp ipr ips ipu ir- irb irc ire iri irp irr irs iru is- isb isc ise isi isp isr iss isu iu- iub iuc iue iui iup iur ius p-p pbb pbc pbe pbi pbp pbr pbs pbu pcb pcc pce pci pcp pcr pcs pcu peb pec pee pei pep per pes peu pib pic pie pii pip pir pis piu ppb ppc ppe ppi ppp ppr pps ppu prb prc pre pri prp prr prs pru ps- psb psc pse psi psp psr pss psu pub puc pue pui pup pur pus puu rbb rbc rbe rbi rbp rbr rbs rbu rcb rcc rce rci rcp rcr rcs rcu re- reb rec ree rei rep rer res reu rib ric rie rii rip rir ris rpb rpc rpe rpi rpp rpr rps rpu rrb rrc rri rrp rrr rrs rru rsb rsc rse rsi rsp rsr rss rsu rub ruc rue rui rup rur rus ruu sbb sbc sbe sbi sbp sbr sbs sbu scb scc sce sci scp scr scs scu se- seb sec see sei sep ser ses seu sib sic sie sii sip sir sis siu spb spc spe spi spp spr sps spu sr- srb src sre sri srp srr srs ss- ssb ssc sse ssi ssp ssr sss ssu sub suc sue sui sup sur sus suu ubb ubc ube ubi ubp ubr ubs ubu ucb ucc uce uci ucp ucr ucs ucu ueb uec uee uei uep uer ues uib uic uie uii uip uir uis uiu up- upb upc upe upi upp upr ups upu ur- urb urc ure uri urp urr urs uru usb usc use usi usp usr uss usu uuc uue uur uus uuu

bbbb bbbs bbci bbeb bbpr bbrc bcbc bcbp bcbs bccc bcci bccs bcec bcer bces bcie bcis bcpp bcps bcrs bcru bcsc bcss bcuc bcup bebb bebe bebi beci becs becu beeb beep beer bees beic beir beis berc bere beri berr bers beru bes- bese bess beur bibb bibe bibi bibs bicc bice bici bics bieb bier bies bieu biis bipp bips bipu birb bire biri birr birs biru bis- bisc bise bisp biss bisu bpcp bprc bpsu brcb brce breb brec bree brei brep brer bres bric brie bris brrr brrs brsb brsr bruc brue brup brus bsci bscp bscs bseb bsec bsee bser bses bsic bspp bspr bssc bsse bsup bubb bube bubi bubs bubu bucc buce buci bucs bucu buer bueu buic buie buir buis buiu bupc bups bur- burb bure buri burp burr burs buru busc buse busi buss busu buus cbbc cbbs cbcc cbce cbcp cbcr cbcs cbcu cbec cbee cber cbir cbpc cbpp cbre cbsc cbse cbsi cbus ccbc cccb cccc ccci cccp cccs cccu ccee ccic ccii ccip ccir ccis ccpe ccpp ccpr ccps ccrc ccre ccri ccrp ccrs ccsi ccsp ccss ccuc ccup ccus cebp cebs cebu 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 ceui cibc cibe cibi cicc cici cicr cics cicu ciee cier cies ciii ciis cipp cips cirb circ cire ciri cirr cirs cis- cisc cise cisp cisr ciss ciuc ciup cius cpbc cpce cpcs cpcu cpeb cpep cper cpic cpps cpre cpri cprs cpsc cpsr cpsu cpus crbc crbu crcc crce crcr cre- creb crec cree crei crep cres creu crib cric crie crip cris criu crpc crps crsp crss crub crue crup crus cscb cscc csce csci cscr cscs csec csee csep cser csib csir csis cspb cspc cspe cspi csps csrc csrs csse cssr csup csur csus cub- cubb cube cubi cubs cucc cuce cuci cuer cues cui- cuir cuis cupe cupp cupr cups curb cure curi curr curs cusb cusp cuss cusu ebbc ebbr ebbs ebcc eber ebes ebic ebis ebru ebur ebus ecbc ecbe eccb eccc ecce ecci eces ecib ecip ecis ecpp ecrc ecri ecrr ecru ecsc ecse ecsp ecss ecsu ecus 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 epub epus erbb erbe ercc erce ercp ereb erec erei erer eres eric erie eris eriu erpe erps errc erre errs erse ersi erub eruc erur erus esbs escb esce esci escr escs escu esee eser eses esie esis espc espe espi espp esps esri esse essi essp essu esui esus eubc eubi euer eur- eurc eure euse i-be