-er -ic -up b-p b-u bbb bbc bbe bbi bbp bbr bbt bbu bcb bcc bce bci bcp bcr bct bcu be- beb bec bee bei bep ber bet beu bi- bib bic bie bii bip bir bit biu bpb bpc bpe bpi bpp bpr bpt bpu brb bre bri brp brr brt bru btb btc bte bti btp btr btt btu bub buc bue bui bup bur but buu c-- cbb cbc cbe cbi cbp cbr cbt cbu ccb ccc cce cci ccp ccr cct ccu ce- ceb cec cee cei cep cer cet ceu ci- cib cic cie cii cip cir cit ciu cpb cpc cpe cpi cpp cpr cpt cpu crb crc cre cri crp crr crt cru ctb ctc cte cti ctp ctr ctt ctu cub cuc cue cui cup cur cut cuu ebb ebc ebe ebi ebp ebr ebt ebu ec- ecb ecc ece eci ecr ect ecu eeb eec eee eep eer eet eib eic eie eii eip eir eit eiu ep- epb epc epe epi epp epr ept epu erb erc ere eri erp err ert eru etb etc ete eti etp etr ett etu eu- eub euc eue eui eup eur eut ibb ibc ibe ibi ibp ibr ibt ibu icb icc ice ici icp icr ict icu ie- iec iee iei iep ier iet iib iic iie iii iip iir iit iiu ipb ipc ipe ipi ipp ipr ipt ipu ir- irb irc ire iri irp irr irt iru itb itc ite iti itp itt itu iu- iub iuc iue iui iup iur iut p-p pbb pbc pbe pbi pbp pbr pbt pbu pcb pcc pce pci pcp pcr pct pcu peb pec pee pei pep per pet peu pib pic pie pii pip pir pit piu ppb ppc ppe ppi ppp ppr ppt ppu prb prc pre pri prp prr prt pru pt- ptb ptc pte pti ptp ptr ptt ptu pub puc pue pui pup pur put puu rbb rbc rbe rbi rbp rbr rbt rbu rcb rcc rce rci rcp rcr rct rcu re- reb rec ree rei rep rer ret reu rib ric rie rii rip rir rit rpb rpc rpe rpi rpp rpr rpt rpu rrb rrc rri rrp rrr rrt rru rtb rtc rte rti rtp rtr rtt rtu rub ruc rue rui rup rur rut ruu tbb tbc tbe tbi tbp tbr tbt tbu tcb tcc tce tci tcp tcr tct tcu te- teb tec tee tei tep ter tet teu tib tic tie tii tip tir tit tiu tpb tpc tpe tpi tpp tpr tpt tpu trb trc tre tri trp trr trt tru ttb ttc tte tti ttp ttr ttt ttu tub tuc tue tui tup tur tut tuu ubb ubc ube ubi ubp ubr ubt ubu ucb ucc uce uci ucp ucr uct ucu ueb uec uee uei uep uer uet uib uic uie uii uip uir uit uiu up- upb upc upe upi upp upr upt upu ur- urb urc ure uri urp urr urt uru utb utc ute uti utp utr utt utu uuc uue uur uut uuu

bbbb bbci bbeb bbet bbpr bbrc bcbc bcbp bccc bcci bcec bcer bcet bcie bcit bcpp bcru bctc bcuc bcup bebb bebe bebi beci becu beeb beep beer beet beic beir beit berc bere beri berr bert beru betc bete beti bett betu beur bibb bibe bibi bicc bice bici bieb bier biet bieu bipp bipu birb bire biri birr birt biru bitc bite bitt bitu bpcp bprc bpti brcb brce breb brec bree brei brep brer bret bric brie brit brrr brtc bruc brue brup brut btbp btcc btec btie btrc btrt bttb bubb bube bubi bubu bucc buce buci bucu buer bueu buic buie buir buit buiu bupc bur- burb bure buri burp burr burt buru but- bute buti butt cbbc cbcc cbce cbcp cbcr cbct cbcu cbec cbee cber cbet cbir cbit cbpc cbpp cbre cbrt cbtc ccbc cccb cccc ccci cccp cccu ccee ccic ccii ccip ccir ccpe ccpp ccpr ccrc ccre ccri ccrp ccrt cctb cctc cctt ccuc ccup ccut cebp cebu cec- cece ceci cecp cect ceeb ceec ceip cepc cepe cepp cepr cept cer- cerc cere ceri cerp cert cet- cete ceti cetp ceui cibc cibe cibi cicc cici cicr cict cicu ciee cier ciii ciit cipp cirb circ cire ciri cirr cirt citb cite citi citp citt citu ciuc ciup cpbc cpce cpcu cpeb cpep cper cpic cpre cpri cprt cptp cptr crbc crbu crcc crce crcr cre- creb crec cree crei crep cret creu crib cric crie crip crit criu crpc crrt crtc crtp crub crue crup crut ctbi ctcp ctec ctep ctic ctpp ctrc ctrp cub- cubb cube cubi cucc cuce cuci cuer cui- cuir cuit cupe cupp cupr curb cure curi curr curt cut- cutc cute cutt ebbc ebbr ebcc eber ebic ebit ebru ebur ecbc ecbe eccb eccc ecce ecci ecct ecib ecip ecit ecpp ecrc ecri ecrr ecru ect- ectc eeee eerc eetc eete eetu eiec eiei eier eipr eire eitb eitc eiti eitr epcc epci epec epee eper epi- epic epie epip epit eppc eppp eprb eprp epte epub erbb erbe ercc erce ercp ereb erec erei erer eret eric erie erit eriu erpe errc erre ertu erub eruc erur etbc etbr etcc etec etee eter etic etre ette etti ettu etui eubc eubi euer eur- eurc eure eurt i-be ibec ibet ibie ibrc ibri ibtb ibtc icbc icbp iccb iccc icci iccp iccr icct iccu icec icee icer icet icpc icrc icre icrr icrt icru ictp icub icue icup iecc ieet ieie iere ieri iett iiie iiii iiit iirc iitr iitt iiuc ipcc ipce ipct ipec iper ipet ipie ippc ippr ipri iptc ipur iput irbe irbp ircc ircu iree irer iri- iric irie irip irpc irpe irrc irre irri irte irti irtp itbe itec itep iter itet itic itie itpc itri itup itur iucc iuce iuiu iupp pbcc pcbc pccc pcce pcep pcer pcip pcpb