-er -up b-p b-u bbb bbc bbe bbo bbp bbr bbt bbu bcb bcc bce bco bcp bcr bct bcu be- beb bec bee beo bep ber bet beu bob boc boe boo bop bor bot bou bpb bpc bpe bpo bpp bpr bpt bpu brb bre bro brp brr brt bru btb btc bte bto btp btr btt btu bub buc bue buo bup bur but buu c-- cbb cbc cbe cbo cbp cbr cbt cbu ccb ccc cce cco ccp ccr cct ccu ce- ceb cec cee ceo cep cer cet ceu co- cob coc coe coo cop cor cot cou cpb cpc cpe cpo cpp cpr cpt cpu crb crc cre cro crp crr crt cru ctb ctc cte cto ctp ctr ctt ctu cub cuc cue cuo cup cur cut cuu ebb ebc ebe ebo ebp ebr ebt ebu ec- ecb ecc ece eco ecr ect ecu eeb eec eee eeo eep eer eet eo- eob eoc eoe eoo eop eor eot eou ep- epb epc epe epo epp epr ept epu erb erc ere ero erp err ert eru etb etc ete eto etp etr ett etu eu- eub euc eue eup eur eut ob- obb obc obe obo obp obr obt obu oc- ocb occ oco ocp ocr oct ocu oeb oec oee oeo oep oer oet oo- oob ooc ooo oop oor oot op- opb opc ope opo opp opr opt or- orb orc ore oro orp orr ort oru ot- otb otc ote oto otp otr ott otu ou- ouc oue ouo oup our out p-p pbb pbc pbe pbo pbp pbr pbt pbu pcb pcc pce pco pcp pcr pct pcu peb pec pee peo pep per pet peu pob poc poe poo pop por pot pou ppb ppc ppe ppo ppp ppr ppt ppu prb prc pre pro prp prr prt pru pt- ptb ptc pte pto ptp ptr ptt ptu pub puc pue pup pur put puu rbb rbc rbe rbo rbp rbr rbt rbu rcb rcc rce rco rcp rcr rct rcu re- reb rec ree reo rep rer ret reu rob roc roe roo rop ror rot rou rpb rpc rpe rpo rpp rpr rpt rpu rrb rrc rrp rrr rrt rru rtb rtc rte rto rtp rtr rtt rtu rub ruc rue ruo rup rur rut ruu tbb tbc tbe tbo tbp tbr tbt tbu tcb tcc tce tco tcp tcr tct tcu te- teb tec tee teo tep ter tet teu to- tob toc toe too top tor tot tou tpb tpc tpe tpo tpp tpr tpt tpu trb trc tre tro trp trr trt tru ttb ttc tte tto ttp ttr ttt ttu tub tuc tue tuo tup tur tut tuu ubb ubc ube ubo ubp ubr ubt ubu ucb ucc uce uco ucp ucr uct ucu ueb uec uee uep uer uet uob uoc uoe uoo uop uor uot up- upb upc upe upo upp upr upt upu ur- urb urc ure uro urp urr urt uru utb utc ute uto utp utr utt utu uuc uue uur uut uuu

bbbb bbeb bbet bbpr bbrc bcbc bcbp bccc bcec bcer bcet bcor bcpp bcru bctc bcuc bcup bebb bebe bebo becu beeb beep beer beet beo- beor beot bepo berc bere bero berr bert beru betc bete beto bett betu beur bobb bobe bobo bobu boce boco bocu boec boee boeo boep boer boet boob booc booe boop boor boot bope bopp bor- bore boro borr bort boru botb bote boto bott boue boup bour bout bpcp bpoe bpot bprc brcb brce breb brec bree breo brep brer bret brob broc broe broo bror brot brou brrr brtc bruc brue brup brut btbp btcc btec btob btor btrc btrt bttb bubb bube bubo bubu bucc buce buco bucu buer bueu bupc bur- burb bure buro burp burr burt buru but- bute buto butt c-bo cbbc cbcc cbce cbcp cbcr cbct cbcu cbec cbee cber cbet cbot cbpc cbpp cbre cbrt cbtc ccbc cccb cccc cccp cccu ccee ccob ccoc ccpe ccpp ccpr ccrc ccre ccrp ccrt cctb cctc cctt ccuc ccup ccut cebp cebu cec- cece ceco cecp cect ceeb ceec ceop ceor ceou cepc cepe cepo cepp cepr cept cer- cerc cere cero cerp cert cet- cete ceto cetp cobb cobe cobo cobu coce coco cocp coct cocu coep coob coop coot cope copo copp copr copt cor- corb corc core coro corp corr cort cotb cotc cote coto cott cotu coub coue coup cour cout cpbc cpce cpcu cpeb cpep cper cpre cprt cptp cptr crbc crbu crcc crce crcr cre- creb crec cree creo crep cret creu crob croc croe croo crop cror crot crpc crrt crtc crtp crub crue crup crut ctcp ctec ctep ctor ctot ctpo ctpp ctrc ctrp cub- cubb cube cucc cuce cuer cupe cupo cupp cupr curb cure curo curr curt cut- cutc cute cuto cutt ebbc ebbo ebbr ebcc eber eboe eboo ebor ebpo ebro ebru ebur ecbc ecbe eccb eccc ecce ecco ecct eco- ecop ecot ecou ecpp ecrc ecrr ecru ect- ectc ecto eeee eeoc eerc eero eetc eete eetu eore eotc eoto epcc epec epee eper epoc epor epot eppc eppo eppp eprb epro eprp epte epub erbb erbe ercc erce ercp ereb erec erer eret erob eroc eroe eroo erpe errc erre erro ertu erub eruc erur etbc etbr etcc etco etec etee eter etoe etre etro ette etto ettu eubc euer eur- eurc eure euro eurt o-eo obbo obec ober obet oboe obor obot obre obro ocbc occc occt oce ocee ocet ocpp ocre ocro ocrr oct- octe octo ocur oec- oecc oeec oere oobe oocr ooer oooo oore oort ootb ootp opec opep oper opet opo- opor oppo opto orbb orbe orbo orbu orce orco ore- oreb orec oreo orer oro- oroe oror orot orpc orpe orro ortc orte orto orub orup otee otep oter oto- otoe otoo otor otpp otre otro otte otto ottu otur oucc ouer