-er -ic -up b-p b-u bbb bbc bbe bbg bbi bbp bbr bbt bbu bcb bcc bce bcg bci bcp bcr bct bcu be- beb bec bee beg bei bep ber bet beu bgb bgc bge bgg bgi bgp bgr bgt bgu bi- bib bic bie big bii bip bir bit biu bpb bpc bpe bpg bpi bpp bpr bpt bpu brb bre brg bri brp brr brt bru btb btc bte btg bti btp btr btt btu bub buc bue bug bui bup bur but buu c-- cbb cbc cbe cbg cbi cbp cbr cbt cbu ccb ccc cce ccg cci ccp ccr cct ccu ce- ceb cec cee ceg cei cep cer cet ceu cgb cgc cge cgg cgi cgp cgr cgt cgu ci- cib cic cie cig cii cip cir cit ciu cpb cpc cpe cpg cpi cpp cpr cpt cpu crb crc cre crg cri crp crr crt cru ctb ctc cte ctg cti ctp ctr ctt ctu cub cuc cue cug cui cup cur cut cuu ebb ebc ebe ebg ebi ebp ebr ebt ebu ec- ecb ecc ece ecg eci ecr ect ecu eeb eec eee eeg eep eer eet egb egc ege egg egi egp egr egt egu eib eic eie eig eii eip eir eit eiu ep- epb epc epe epg epi epp epr ept epu erb erc ere erg eri erp err ert eru etb etc ete etg eti etp etr ett etu eu- eub euc eue eug eui eup eur eut g-p gbc gbe gbg gbi gbp gbr gbt gbu gcb gcc gce gcg gci gcp gcr gct gcu ge- geb gec gee geg gei gep ger get geu ggb ggc ggg ggi ggp ggr ggt ggu gib gic gie gig gii gip gir git giu gpb gpc gpe gpg gpi gpp gpr gpt gpu grb grc gre grg gri grp grr grt gru gtb gtc gte gtg gti gtp gtr gtt gtu gu- gub guc gue gug gui gup gur gut guu ibb ibc ibe ibg ibi ibp ibr ibt ibu icb icc ice icg ici icp icr ict icu ie- iec iee ieg iei iep ier iet igb igc ige igg igi igp igr igt igu iib iic iie iii iip iir iit iiu ipb ipc ipe ipg ipi ipp ipr ipt ipu ir- irb irc ire irg iri irp irr irt iru itb itc ite itg iti itp itt itu iu- iub iuc iue iug iui iup iur iut p-p pbb pbc pbe pbg pbi pbp pbr pbt pbu pcb pcc pce pcg pci pcp pcr pct pcu peb pec pee peg pei pep per pet peu pgb pgc pge pgg pgi pgp pgr pgt pib pic pie pig pii pip pir pit piu ppb ppc ppe ppg ppi ppp ppr ppt ppu prb prc pre prg pri prp prr prt pru pt- ptb ptc pte ptg pti ptp ptr ptt ptu pub puc pue pug pui pup pur put puu rbb rbc rbe rbg rbi rbp rbr rbt rbu rcb rcc rce rcg rci rcp rcr rct rcu re- reb rec ree reg rei rep rer ret reu rgb rgc rge rgg rgi rgp rgr rgt rib ric rie rig rii rip rir rit rpb rpc rpe rpg rpi rpp rpr rpt rpu rrb rrc rrg rri rrp rrr rrt rru rtb rtc rte rtg rti rtp rtr rtt rtu rub ruc rue rug rui rup rur rut ruu tbb tbc tbe tbg tbi tbp tbr tbt tbu tcb tcc tce tcg tci tcp tcr tct tcu te- teb tec tee teg tei tep ter tet teu tgb tgc tge tgg tgi tgp tgr tgt tgu tib tic tie tig tii tip tir tit tiu tpb tpc tpe tpg tpi tpp tpr tpt tpu trb trc tre trg tri trp trr trt tru ttb ttc tte ttg tti ttp ttr ttt ttu tub tuc tue tug tui tup tur tut tuu ubb ubc ube ubg ubi ubp ubr ubt ubu ucb ucc uce ucg uci ucp ucr uct ucu ueb uec uee ueg uei uep uer uet ugb ugc uge ugg ugi ugp ugr ugt ugu uib uic uie uig uii uip uir uit uiu up- upb upc upe upg upi upp upr upt upu ur- urb urc ure urg uri urp urr urt uru utb utc ute uti utp utr utt utu uuc uue uug uur uut uuu

bbbb bbci bbeb bbet bbpr bbrc bbrg bcbc bcbg bcbp bccc bcci bcec bcer bcet bcie bcit bcpp bcru bctc bcuc bcup bebb bebe bebi beci becu beeb beeg beep beer beet begg begi begu beic beir beit berc bere berg beri berr bert beru betc bete beti bett betu beur bibb bibe bibi bicc bice bicg bici bieb bier biet bieu bigb bigc bige bigg bigt bigu bipp bipu birb bire birg biri birr birt biru bitc bite bitt bitu bpcp bprc bpti brcb brce breb brec bree breg brei brep brer bret bric brie brig brit brrr brtc bruc brue brug brup brut btbp btcc btec btie btrc btrt bttb bubb bube bubi bubu bucc buce buci bucu buer bueu buge bugg bugi buic buie buir buit buiu bupc bur- burb bure burg buri burp burr burt buru but- bute buti butt cbbc cbcc cbce cbcp cbcr cbct cbcu cbec cbee cber cbet cbgb cbir cbit cbpc cbpp cbre cbrt cbtc ccbc cccb cccc ccci cccp cccu ccee ccgc ccgt ccic ccii ccip ccir ccpe ccpp ccpr ccrc ccre ccrg ccri ccrp ccrt cctb cctc cctt ccuc ccup ccut cebp cebu cec- cece ceci cecp cect ceeb ceec cege ceip cepc cepe cepp cepr cept cer- cerc cere ceri cerp cert cet- cete ceti cetp ceui cgcc cgcg cger cgtp cgtu cibc cibe cibi cicc cici cicr cict cicu ciee cier cigi cigu ciii ciit cipp cirb circ cire ciri cirr cirt citb cite citg citi citp citt citu ciuc ciup cpbc cpce cpcu cpeb cpep cper cpgb cpic cpre cpri cprt cptp cptr crbc