-er -ic -up c-- ccc cce cci ccp ccr cct ccu ce- cec cee cei cep cer cet ceu ci- cic cie cii cip cir cit ciu cpc cpe cpi cpp cpr cpt cpu crc cre cri crp crr crt cru ctc cte cti ctp ctr ctt ctu cuc cue cui cup cur cut cuu ec- ecc ece eci ecr ect ecu eec eee eep eer eet eic eie eii eip eir eit eiu ep- epc epe epi epp epr ept epu erc ere eri erp err ert eru etc ete eti etp etr ett etu eu- euc eue eui eup eur eut icc ice ici icp icr ict icu ie- iec iee iei iep ier iet iic iie iii iip iir iit iiu ipc ipe ipi ipp ipr ipt ipu ir- irc ire iri irp irr irt iru itc ite iti itp itt itu iu- iuc iue iui iup iur iut p-p pcc pce pci pcp pcr pct pcu pec pee pei pep per pet peu pic pie pii pip pir pit piu ppc ppe ppi ppp ppr ppt ppu prc pre pri prp prr prt pru pt- ptc pte pti ptp ptr ptt ptu puc pue pui pup pur put puu rcc rce rci rcp rcr rct rcu re- rec ree rei rep rer ret reu ric rie rii rip rir rit rpc rpe rpi rpp rpr rpt rpu rrc rri rrp rrr rrt rru rtc rte rti rtp rtr rtt rtu ruc rue rui rup rur rut ruu tcc tce tci tcp tcr tct tcu te- tec tee tei tep ter tet teu tic tie tii tip tir tit tiu tpc tpe tpi tpp tpr tpt tpu trc tre tri trp trr trt tru ttc tte tti ttp ttr ttt ttu tuc tue tui tup tur tut tuu ucc uce uci ucp ucr uct ucu uec uee uei uep uer uet uic uie uii uip uir uit uiu up- upc upe upi upp upr upt upu ur- urc ure uri urp urr urt uru utc ute uti utp utr utt utu uuc uue uur uut uuu

cccc ccci cccp cccu ccee ccic ccii ccip ccir ccpe ccpp ccpr ccrc ccre ccri ccrp ccrt cctc cctt ccuc ccup ccut cec- cece ceci cecp cect ceec ceip cepc cepe cepp cepr cept cer- cerc cere ceri cerp cert cet- cete ceti cetp ceui cicc cici cicr cict cicu ciee cier ciii ciit cipp circ cire ciri cirr cirt cite citi citp citt citu ciuc ciup cpce cpcu cpep cper cpic cpre cpri cprt cptp cptr crcc crce crcr cre- crec cree crei crep cret creu cric crie crip crit criu crpc crrt crtc crtp crue crup crut ctcp ctec ctep ctic ctpp ctrc ctrp cucc cuce cuci cuer cui- cuir cuit cupe cupp cupr cure curi curr curt cut- cutc cute cutt eccc ecce ecci ecct ecip ecit ecpp ecrc ecri ecrr ecru ect- ectc eeee eerc eetc eete eetu eiec eiei eier eipr eire eitc eiti eitr epcc epci epec epee eper epi- epic epie epip epit eppc eppp eprp epte ercc erce ercp erec erei erer eret eric erie erit eriu erpe errc erre ertu eruc erur etcc etec etee eter etic etre ette etti ettu etui euer eur- eurc eure eurt iccc icci iccp iccr icct iccu icec icee icer icet icpc icrc icre icrr icrt icru ictp 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 ircc ircu iree irer iri- iric irie irip irpc irpe irrc irre irri irte irti irtp itec itep iter itet itic itie itpc itri itup itur iucc iuce iuiu iupp pccc pcce pcep pcer pcip pcpp pcrc pcre pcte pece peci pecr pect peec peep peer peet peip peir peit pepe pepi per- perc pere peri perp perr pert peru pete peti petr pett peur peut picc pice pici picr pict picu piep pier piet piip pipe pipi pipp pirc pire piri pirr piru pite piti pitr pitt pitu ppcc ppci pper ppic ppie pppp pprc ppru pptt ppur prcc prcp pre- prec pree prep pret preu pri- prie prii prri prtc prti prtp prtr prue prut pruu ptcc pter pttc ptui pu-e puce puer puet pueu puir puit puiu pupe pupi pupu pur- pure puri purp purr puru put- pute puti putt putu puuc rccc rcep rcet rcic rcpi rcpt rctc rcti recc rece reci recp recr rect recu reep reet reii reir reit reiu repe repi repp repr rept repu rere reri rert reru rete reti retr rett reue reup reut reuu ricc rice rict riep rier riet rieu ripe ripi ripp ripr ript rire riri rite riti ritt ritu riue rpet rpii rrrr rtcc rtce rtee rtei rttp ruce ruci ruct ruer ruet ruit rupe rupp rupt rurc rure ruri rurp ruru rute ruti rutt rutu tccc tccu tcep tctc tecr tect teec teer teet teic teie teip teir teiu tepe tepi tepp tepu ter- terc tere teri terp terr teru tete teti tetr tett tetu teut ticc tice tie- tiee tiei tiep tier tiet tiit tiiu tip- tipc tipe tipi tipp tipt tipu tire tiri tirr tiru titc tite titi titp titt titu tpcp tper tpir tppp tppr tpte tptp tptr tput trcc tre- trec tree trei tret treu tri- tric trie trip trit trpc trpe trpp trtc trte trtr truc true trut truu ttcp tter tttt tucc tuei tuer tuet tuit tuiu tupe tupi tupu turc ture turi turp turr turt turu tute tuti tutt tutu u-ie u-rp ucci uccp ucrc ucut ueir uepi uipi uirr upci upic upie uppc uppe uppp uppu upri upup urci ure- uret uric urie uriu urre urri urte urup urur urut utec utep uter utri utti uttu uucp uuri uuuu

-tree c-p-c c-tec ccccc cccii ccett cciii ccitt ceci- cecie cecri ceere ceipp ceirt cepci cepet cepic cepie cepii cerc- cerce cerci cerec cerer ceret ceric cerie cerre certe