-er -ic b-u bbb bbc bbe bbg bbh bbi bbr bbs bbu bcb bcc bce bcg bch bci bcr bcs bcu be- beb bec bee beg beh bei ber bes beu bgb bgc bge bgg bgh bgi bgr bgs bgu bhb bhc bhe bhg bhh bhi bhr bhs bhu bi- bib bic bie big bih bii bir bis biu brb bre brg brh bri brr brs bru bsb bsc bse bsg bsh bsi bsr bss bsu bub buc bue bug buh bui bur bus buu c-- cbb cbc cbe cbg cbh cbi cbr cbs cbu ccb ccc cce ccg cch cci ccr ccs ccu ce- ceb cec cee ceg ceh cei cer ces ceu cgb cgc cge cgg cgh cgi cgr cgs cgu ch- chb chc che chg chh chi chr chs chu ci- cib cic cie cig cih cii cir cis ciu crb crc cre crg crh cri crr crs cru csb csc cse csg csh csi csr css csu cub cuc cue cug cuh cui cur cus cuu ebb ebc ebe ebg ebh ebi ebr ebs ebu ec- ecb ecc ece ecg ech eci ecr ecs ecu eeb eec eee eeg eer ees egb egc ege egg egh egi egr egs egu ehb ehc ehe ehg ehh ehi ehr ehs ehu eib eic eie eig eii eir eis eiu erb erc ere erg erh eri err ers eru es- esb esc ese esg esh esi esr ess esu eu- eub euc eue eug eui eur eus gbc gbe gbg gbh gbi gbr gbs gbu gcb gcc gce gcg gch gci gcr gcs gcu ge- geb gec gee geg geh gei ger ges geu ggb ggc ggg ggh ggi ggr ggs ggu ghb ghc ghe ghg ghh ghi ghr ghs gib gic gie gig gih gii gir gis giu grb grc gre grg grh gri grr grs gru gsb gsc gse gsg gsi gsr gss gsu gu- gub guc gue gug gui gur gus guu h-i hbb hbc hbe hbg hbh hbi hbr hbs hbu hcb hcc hce hcg hch hci hcr hcs he- heb hec hee heg heh hei her hes heu hgb hgc hge hgg hgh hgi hgr hgs hgu hhb hhc hhe hhg hhh hhi hhr hhs hhu hib hic hie hig hih hii hir his hiu hr- hrb hrc hre hrg hrh hri hrr hrs hru hsb hsc hse hsg hsh hsi hsr hss hsu hub huc hue hug huh hui hur hus huu ibb ibc ibe ibg ibh ibi ibr ibs ibu icb icc ice icg ich ici icr ics icu ie- iec iee ieg iei ier ies igb igc ige igg igh igi igr igs igu ihb ihc ihe ihg ihh ihi ihr ihs ihu iib iic iie iih iii iir iis iiu ir- irb irc ire irg iri irr irs iru is- isb isc ise isg ish isi isr iss isu iu- iub iuc iue iug iui iur ius rbb rbc rbe rbg rbh rbi rbr rbs rbu rcb rcc rce rcg rch rci rcr rcs rcu re- reb rec ree reg reh rei rer res reu rgb rgc rge rgg rgh rgi rgr rgs rh- rhb rhc rhe rhg rhh rhi rhr rhs rhu rib ric rie rig rih rii rir ris rrb rrc rrg rrh rri rrr rrs rru rsb rsc rse rsg rsh rsi rsr rss rsu rub ruc rue rug ruh rui rur rus ruu sbb sbc sbe sbg sbh sbi sbr sbs sbu scb scc sce scg sch sci scr scs scu se- seb sec see seg seh sei ser ses seu sgb sgc sge sgg sgh sgi sgr sgs sgu sh- shb shc she shg shh shi shr shs shu sib sic sie sig sih sii sir sis siu sr- srb src sre srg srh sri srr srs ss- ssb ssc sse ssg ssh ssi ssr sss ssu sub suc sue sug suh sui sur sus suu ubb ubc ube ubg ubh ubi ubr ubs ubu ucb ucc uce ucg uch uci ucr ucs ucu ueb uec uee ueg ueh uei uer ues ugb ugc uge ugg ugh ugi ugr ugs ugu uhb uhc uhe uhh uhi uhr uhs uhu uib uic uie uig uii uir uis uiu ur- urb urc ure urg uri urr urs uru usb usc use usg ush usi usr uss usu uuc uue uug uur uus uuu

bbbb bbbs bbch bbci bbeb bbhs bbrc bbrg bcbc bcbg bcbs bccc bcci bccs bcec bcer bces bcgs bche bchs bcie bcis bcrs bcru bcsc bcss bcuc bebb bebe bebi bech beci becs becu beeb beeg beer bees begg begi begs begu behr behs beic beir beis berc bere berg beri berr bers beru bes- bese besh bess beur bggs bghs bhcc bher bhhs bhie bhir bhur bhuu bibb bibe bibi bibs bicc bice bicg bich bici bics bieb bier bies bieu bigb bigc bige bigg bigs bigu bihe bihi bihs bihu biis birb bire birg biri birr birs biru bis- bisc bise bish biss bisu brcb brce breb brec bree breg brei brer bres brhs bric brie brig brih bris brrr brrs brsb brsr bruc brue brug bruh brus bsci bscs bseb bsec bsee bseg bser bses bsgs bshs bsic bssc bsse bubb bube bubi bubs bubu bucc buce buch buci bucs bucu buer bueu buge bugg bugh bugi bugs buhe buhi buhr buhs buic buie buir buis buiu bur- burb bure burg burh buri burr burs buru busc buse bush busi buss busu buus cbbc cbbs cbcc cbce cbcr cbcs cbcu cbec cbee cber cbgb cbhs cbir cbre cbrh cbsc cbse cbsi cbus ccbc cccb cccc ccci cccs cccu ccee ccgc ccgs cche cchr cchs ccic ccii ccir ccis ccrc ccre ccrg ccri ccrs ccsg ccsi ccss ccuc ccus cebs cebu cec- cece ceci cecs ceeb ceec cees cege cehs cer- cerc cere ceri cers cesc cese cesg cesi cesr cess ceui cgcc cgcg cger cges cggs cghs cgis cgsb cgsh cgss chce chch chci chcs cheb chec chee cheh cher ches