-er -ic c-- ccc cce cci cco ccr cct ccu ce- cec cee cei ceo cer cet ceu ci- cic cie cii cio cir cit ciu co- coc coe coi coo cor cot cou crc cre cri cro crr crt cru ctc cte cti cto ctr ctt ctu cuc cue cui cuo cur cut cuu ec- ecc ece eci eco ecr ect ecu eec eee eeo eer eet eic eie eii eio eir eit eiu eo- eoc eoe eoi eoo eor eot eou erc ere eri ero err ert eru etc ete eti eto etr ett etu eu- euc eue eui eur eut icc ice ici ico icr ict icu ie- iec iee iei ier iet iic iie iii iio iir iit iiu io- ioc ioe ioi ioo ior iot iou ir- irc ire iri iro irr irt iru itc ite iti ito itt itu iu- iuc iue iui iur iut o-i oc- occ oci oco ocr oct ocu oec oee oei oeo oer oet oic oie oii oio oir oit oiu oo- ooc ooi ooo oor oot or- orc ore ori oro orr ort oru ot- otc ote oti oto otr ott otu ou- ouc oue oui ouo our out rcc rce rci rco rcr rct rcu re- rec ree rei reo rer ret reu ric rie rii rio rir rit roc roe roi roo ror rot rou rrc rri rrr rrt rru rtc rte rti rto rtr rtt rtu ruc rue rui ruo rur rut ruu tcc tce tci tco tcr tct tcu te- tec tee tei teo ter tet teu tic tie tii tio tir tit tiu to- toc toe toi too tor tot tou trc tre tri tro trr trt tru ttc tte tti tto ttr ttt ttu tuc tue tui tuo tur tut tuu ucc uce uci uco ucr uct ucu uec uee uei uer uet uic uie uii uio uir uit uiu uoc uoe uoo uor uot ur- urc ure uri uro urr urt uru utc ute uti uto utr utt utu uuc uue uur uut uuu

cccc ccci cccu ccee ccic ccii ccir ccoc ccrc ccre ccri ccrt cctc cctt ccuc ccut cec- cece ceci ceco cect ceec ceor ceou cer- cerc cere ceri cero cert cet- cete ceti ceto ceui cicc cici cico cicr cict cicu ciee cier ciii ciit cior circ cire ciri ciro cirr cirt cite citi cito citt citu ciuc coce coco coct cocu coir coit coot cor- corc core cori coro corr cort cotc cote coti coto cott cotu coue cour cout crcc crce crcr cre- crec cree crei creo cret creu cric crie crit criu croc croe croo cror crot crrt crtc crue crut ctec ctic ctor ctot ctrc cucc cuce cuci cuer cui- cuir cuit cure curi curo curr curt cut- cutc cute cuto cutt eccc ecce ecci ecco ecct ecit eco- ecot ecou ecrc ecri ecrr ecru ect- ectc ecto eeee eeoc eerc eero eetc eete eetu eico eiec eiei eier eiou eire eitc eiti eito eitr eoir eore eori eotc eoto ercc erce erec erei erer eret eric erie erio erit eriu eroc eroe eroi eroo errc erre erro ertu eruc erur etcc etco etec etee eter etic etio etoe etre etro ette etti etto ettu etui euer euoi eur- eurc eure euro eurt iccc icci icco iccr icct iccu icec icee icer icet icoc icor icrc icre icrr icrt icru icue iecc ieet ieie ieio iere ieri iett iiie iiii iiio iiit iioi iioo iirc iitr iitt iiuc ioci ioee ioii ioio ioit iooi iooo iore iori iote ioto ircc ircu iree irer iri- iric irie irio iroc irrc irre irri irte irti itec iter itet itic itie itoi itoo itor itou itri itto itur iucc iuce iuiu o-eo occc occi occt oce ocee ocet ocre ocro ocrr oct- octe octi octo ocur oec- oecc oeec oere oeti oici oier oiii oire oirt oitc oiti oocr ooer oooo oore oort orce orci orco ore- orec oreo orer ori- oric orie orio orit oro- oroe oror orot orri orro ortc orte orto otee oter otic otit oto- otoe otoo otor otre otro otte otti otto ottu otur oucc ouer ouie ouii ouir ouit our- oure ouro ourt out- oute outi outo ouu- rccc rcet rcic rctc rcti recc rece reci recr rect recu reet reii reir reit reiu reot reou rere reri rero rert reru rete reti reto retr rett reue reut reuu ricc rice rico rict rier riet rieu riot riou rire riri rite riti rito ritt ritu riue rocc roce roco roer roet roio roir roit roiu rooi roor root rorc rore rori roro rort roru rotc rote roti roto rotr rott roue rout rrrr rtcc rtce rtee rtei ruce ruci ruct ruer ruet ruit rurc rure ruri ruro ruru rute ruti ruto rutt rutu tccc tccu tctc teco tecr tect teec teer teet teic teie teir teiu teor ter- terc tere teri tero terr teru tete teti teto tetr tett tetu teut ticc tice tico tie- tiee tiei tieo tier tiet tiit tiiu tiou tire tiri tiro tirr tiru titc tite titi tito titt titu toce toci toco toee toei toer toet toie toit toor toot torc tore tori toro torr tort toru totc tote toti toto totr tott toui tour tout trcc tre- trec tree trei treo tret treu tri- tric trie trio trit troc troe troi troo trot trou trtc trte trtr truc true trut truu tteo tter ttoe tttt tucc tuco tuei tuer tuet tuit tuiu tuor turc ture turi turo turr turt turu tute tuti tuto tutt tutu tuuo u-ie ucci ucio ucrc ucut ueir uirr uocc uor- uore urci ure- uret uric urie uriu uro- uroo urre urri urte urur urut utec uter utor utri utti utto uttu uuoc uuri uuuu

-tree c-cor c-tec ccccc cccii ccett cciii ccitt ceci- cecie ceco- cecri ceere ceirt ceoce ceoor cerc- cerce cerci cerco cerec cerer ceret ceric cerie cerio cero- ceroc cerou cerre cerro certe cetic ceto- cette