-er -ic b-u bbb bbc bbe bbg bbi bbr bbs bbu bcb bcc bce bcg bci bcr bcs bcu be- beb bec bee beg bei ber bes beu bgb bgc bge bgg bgi bgr bgs bgu bi- bib bic bie big bii bir bis biu brb bre brg bri brr brs bru bsb bsc bse bsg bsi bsr bss bsu bub buc bue bug bui bur bus buu c-- cbb cbc cbe cbg cbi cbr cbs cbu ccb ccc cce ccg cci ccr ccs ccu ce- ceb cec cee ceg cei cer ces ceu cgb cgc cge cgg cgi cgr cgs cgu ci- cib cic cie cig cii cir cis ciu crb crc cre crg cri crr crs cru csb csc cse csg csi csr css csu cub cuc cue cug cui cur cus cuu ebb ebc ebe ebg ebi ebr ebs ebu ec- ecb ecc ece ecg eci ecr ecs ecu eeb eec eee eeg eer ees egb egc ege egg egi egr egs egu eib eic eie eig eii eir eis eiu erb erc ere erg eri err ers eru es- esb esc ese esg esi esr ess esu eu- eub euc eue eug eui eur eus gbc gbe gbg gbi gbr gbs gbu gcb gcc gce gcg gci gcr gcs gcu ge- geb gec gee geg gei ger ges geu ggb ggc ggg ggi ggr ggs ggu gib gic gie gig gii gir gis giu grb grc gre grg gri grr grs gru gsb gsc gse gsg gsi gsr gss gsu gu- gub guc gue gug gui gur gus guu ibb ibc ibe ibg ibi ibr ibs ibu icb icc ice icg ici icr ics icu ie- iec iee ieg iei ier ies igb igc ige igg igi igr igs igu iib iic iie iii iir iis iiu ir- irb irc ire irg iri irr irs iru is- isb isc ise isg isi isr iss isu iu- iub iuc iue iug iui iur ius rbb rbc rbe rbg rbi rbr rbs rbu rcb rcc rce rcg rci rcr rcs rcu re- reb rec ree reg rei rer res reu rgb rgc rge rgg rgi rgr rgs rib ric rie rig rii rir ris rrb rrc rrg rri rrr rrs rru rsb rsc rse rsg rsi rsr rss rsu rub ruc rue rug rui rur rus ruu sbb sbc sbe sbg sbi sbr sbs sbu scb scc sce scg sci scr scs scu se- seb sec see seg sei ser ses seu sgb sgc sge sgg sgi sgr sgs sgu sib sic sie sig sii sir sis siu sr- srb src sre srg sri srr srs ss- ssb ssc sse ssg ssi ssr sss ssu sub suc sue sug sui sur sus suu ubb ubc ube ubg ubi ubr ubs ubu ucb ucc uce ucg uci ucr ucs ucu ueb uec uee ueg uei uer ues ugb ugc uge ugg ugi ugr ugs ugu uib uic uie uig uii uir uis uiu ur- urb urc ure urg uri urr urs uru usb usc use usg usi usr uss usu uuc uue uug uur uus uuu

bbbb bbbs bbci bbeb bbrc bbrg bcbc bcbg bcbs bccc bcci bccs bcec bcer bces bcgs bcie bcis bcrs bcru bcsc bcss bcuc bebb bebe bebi beci becs becu beeb beeg beer bees begg begi begs begu beic beir beis berc bere berg beri berr bers beru bes- bese bess beur bggs bibb bibe bibi bibs bicc bice bicg bici bics bieb bier bies bieu bigb bigc bige bigg bigs bigu biis birb bire birg biri birr birs biru bis- bisc bise biss bisu brcb brce breb brec bree breg brei brer bres bric brie brig bris brrr brrs brsb brsr bruc brue brug brus bsci bscs bseb bsec bsee bseg bser bses bsgs bsic bssc bsse bubb bube bubi bubs bubu bucc buce buci bucs bucu buer bueu buge bugg bugi bugs buic buie buir buis buiu bur- burb bure burg buri burr burs buru busc buse busi buss busu buus cbbc cbbs cbcc cbce cbcr cbcs cbcu cbec cbee cber cbgb cbir cbre cbsc cbse cbsi cbus ccbc cccb cccc ccci cccs cccu ccee ccgc ccgs ccic ccii ccir ccis ccrc ccre ccrg ccri ccrs ccsg ccsi ccss ccuc ccus cebs cebu cec- cece ceci cecs ceeb ceec cees cege cer- cerc cere ceri cers cesc cese cesg cesi cesr cess ceui cgcc cgcg cger cges cggs cgis cgsb cgss cibc cibe cibi cicc cici cicr cics cicu ciee cier cies cigi cigs cigu ciii ciis cirb circ cire ciri cirr cirs cis- cisc cise cisr ciss ciuc cius crbc crbu crcc crce crcr cre- creb crec cree creg crei cres creu crgs crib cric crie crig cris criu crss crub crue crug crus cscb cscc csce csci cscr cscs csec csee cser csib csir csis csrc csrs csse cssr csur csus cub- cubb cube cubi cubs cucc cuce cuci cuer cues cui- cuir cuis curb cure curi curr curs cusb cusg cuss cusu ebbc ebbr ebbs ebcc eber ebes ebic ebis ebru ebur ebus ecbc ecbe eccb eccc ecce ecci eces ecgs ecib ecig ecis ecrc ecri ecrr ecru ecsc ecse ecss ecsu ecus eecs eeee eees eegs eerc eerg eers eese eesi egbe egbu egcc egcg egcr egec egee eger eggb egge eggi eggs egir egis egre egri egsc egss eics eiec eiei eier eies eige eigg eire eirs eise eiss erbb erbe ercc erce ereb erec erei erer eres erg- ergg ergi ergs eric erie eris eriu errc erre errs erse ersi erub eruc erur erus esbs escb esce esci escr escs escu esee eser eses esie esis esri esse essg essi essu esui esus eubc eubi euer euge eur- eurc eure euse gbbs gc-c gcbc gccc gccs gcic gcii gcrg gcse gcss gcsu gebe gebi gece geer gees gege gegg geic geie geig geir geis gerb gere geri gers geru gesg gesi gess gesu geue gggg ggss gibb gibe gibs gicr gier gies gige gigg gigi gigs