-er -up c-- ccc cce cco ccp ccr cct ccu ce- cec cee ceo cep cer cet ceu co- coc coe coo cop cor cot cou cpc cpe cpo cpp cpr cpt cpu crc cre cro crp crr crt cru ctc cte cto ctp ctr ctt ctu cuc cue cuo cup cur cut cuu ec- ecc ece eco ecr ect ecu eec eee eeo eep eer eet eo- eoc eoe eoo eop eor eot eou ep- epc epe epo epp epr ept epu erc ere ero erp err ert eru etc ete eto etp etr ett etu eu- euc eue eup eur eut oc- occ oco ocp ocr oct ocu oec oee oeo oep oer oet oo- ooc ooo oop oor oot op- opc ope opo opp opr opt or- orc ore oro orp orr ort oru ot- otc ote oto otp otr ott otu ou- ouc oue ouo oup our out p-p pcc pce pco pcp pcr pct pcu pec pee peo pep per pet peu poc poe poo pop por pot pou ppc ppe ppo ppp ppr ppt ppu prc pre pro prp prr prt pru pt- ptc pte pto ptp ptr ptt ptu puc pue pup pur put puu rcc rce rco rcp rcr rct rcu re- rec ree reo rep rer ret reu roc roe roo rop ror rot rou rpc rpe rpo rpp rpr rpt rpu rrc rrp rrr rrt rru rtc rte rto rtp rtr rtt rtu ruc rue ruo rup rur rut ruu tcc tce tco tcp tcr tct tcu te- tec tee teo tep ter tet teu to- toc toe too top tor tot tou tpc tpe tpo tpp tpr tpt tpu trc tre tro trp trr trt tru ttc tte tto ttp ttr ttt ttu tuc tue tuo tup tur tut tuu ucc uce uco ucp ucr uct ucu uec uee uep uer uet uoc uoe uoo uop uor uot up- upc upe upo upp upr upt upu ur- urc ure uro urp urr urt uru utc ute uto utp utr utt utu uuc uue uur uut uuu

cccc cccp cccu ccee ccoc ccpe ccpp ccpr ccrc ccre ccrp ccrt cctc cctt ccuc ccup ccut cec- cece ceco cecp cect ceec ceop ceor ceou cepc cepe cepo cepp cepr cept cer- cerc cere cero cerp cert cet- cete ceto cetp coce coco cocp coct cocu coep coop coot cope copo copp copr copt cor- corc core coro corp corr cort cotc cote coto cott cotu coue coup cour cout cpce cpcu cpep cper cpre cprt cptp cptr crcc crce crcr cre- crec cree creo crep cret creu croc croe croo crop cror crot crpc crrt crtc crtp crue crup crut ctcp ctec ctep ctor ctot ctpo ctpp ctrc ctrp cucc cuce cuer cupe cupo cupp cupr cure curo curr curt cut- cutc cute cuto cutt 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 epro eprp epte ercc erce ercp erec erer eret eroc eroe eroo erpe errc erre erro ertu eruc erur etcc etco etec etee eter etoe etre etro ette etto ettu euer eur- eurc eure euro eurt o-eo occc occt oce ocee ocet ocpp ocre ocro ocrr oct- octe octo ocur oec- oecc oeec oere oocr ooer oooo oore oort ootp opec opep oper opet opo- opor oppo opto orce orco ore- orec oreo orer oro- oroe oror orot orpc orpe orro ortc orte orto orup otee otep oter oto- otoe otoo otor otpp otre otro otte otto ottu otur oucc ouer oupe our- oure ouro ourt out- oute outo ouu- pccc pcce pcep pcer pcoe pcpp pcrc pcre pcte pece peco pecr pect peec peep peer peet peor peou pepe pepo per- perc pere pero perp perr pert peru pete peto petr pett peur peut poce poco poer poet poop poor poot pop- popc pope popo popp popt porc pore poro porr port potc pote poto pott potu poup pour pout ppcc pper pppo pppp pprc ppru pptt ppur prcc prcp pre- prec pree prep pret preu pro- proc proe proo prop prot prou prtc prtp prtr prue prut pruu ptcc pter ptop pttc pu-e puce pueo puer puet pueu pupe pupu pur- pure puro purp purr puru put- pute puto putt putu puuc rccc rcep rcet rcpo rcpt rctc recc rece recp recr rect recu reep reet reop reot reou repe repo repp repr rept repu rere rero rert reru rete reto retr rett reue reup reut reuu rocc roce roco roer roet roop roor root rope ropo rorc rore roro rort roru rotc rote roto rotr rott roue roup rout rpet rpoe rrrr rtcc rtce rtee rttp ruce ruct ruer ruet rupe rupp rupt rurc rure ruro rurp ruru rute ruto rutt rutu tccc tccu tcep tcpo tctc teco tecr tect teec teer teet teor tepe tepp tepu ter- terc tere tero terp terr teru tete teto tetr tett tetu teut toce toco toee toer toet toor toot top- tope topo topp topt topu torc tore toro torp torr tort toru totc tote toto totr tott toup tour tout tpcp tper tppp tppr tpte tptp tptr tput trcc tre- trec tree treo tret treu troc troe troo trop trot trou trpc trpe trpp trtc trte trtr truc true trut truu ttcp tteo tter ttoe ttop tttt tucc tuco tuer tuet tuor tupe tupo tupu turc ture turo turp turr turt turu tute tuto tutt tutu tuuo u-rp uccp ucrc ucut uocc uor- uore upor uppc uppe uppp uppu upto upup ure- uret uro- uroo urpo urre urte urup urur urut utec utep uter utor utto uttu uucp uuoc uuuu

-tree c-cor c-p-c c-pop c-tec ccccc ccett ceco- ceere ceoce ceoor cepet cepot ceppo cerc- cerce cerco cerec cerer ceret cero- ceroc cerou cerre cerro certe ceto- cette co-co co-op cocc- cocce cocco coceo cocto cocur coepe coete coeur cooee