-er c-- ccc cce cco ccr cct ccu ce- cec cee ceo cer cet ceu co- coc coe coo cor cot cou crc cre cro crr crt cru ctc cte cto ctr ctt ctu cuc cue cuo cur cut cuu ec- ecc ece eco ecr ect ecu eec eee eeo eer eet eo- eoc eoe eoo eor eot eou erc ere ero err ert eru etc ete eto etr ett etu eu- euc eue eur eut oc- occ oco ocr oct ocu oec oee oeo oer oet oo- ooc ooo oor oot or- orc ore oro orr ort oru ot- otc ote oto otr ott otu ou- ouc oue ouo our out rcc rce rco rcr rct rcu re- rec ree reo rer ret reu roc roe roo ror rot rou rrc rrr rrt rru rtc rte rto rtr rtt rtu ruc rue ruo rur rut ruu tcc tce tco tcr tct tcu te- tec tee teo ter tet teu to- toc toe too tor tot tou trc tre tro trr trt tru ttc tte tto ttr ttt ttu tuc tue tuo tur tut tuu ucc uce uco ucr uct ucu uec uee uer uet uoc uoe uoo uor uot ur- urc ure uro urr urt uru utc ute uto utr utt utu uuc uue uur uut uuu

cccc cccu ccee ccoc ccrc ccre ccrt cctc cctt ccuc ccut cec- cece ceco cect ceec ceor ceou cer- cerc cere cero cert cet- cete ceto coce coco coct cocu coot cor- corc core coro corr cort cotc cote coto cott cotu coue cour cout crcc crce crcr cre- crec cree creo cret creu croc croe croo cror crot crrt crtc crue crut ctec ctor ctot ctrc cucc cuce cuer cure curo curr curt cut- cutc cute cuto cutt eccc ecce ecco ecct eco- ecot ecou ecrc ecrr ecru ect- ectc ecto eeee eeoc eerc eero eetc eete eetu eore eotc eoto ercc erce erec erer eret eroc eroe eroo 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 ocre ocro ocrr oct- octe octo ocur oec- oecc oeec oere oocr ooer oooo oore oort orce orco ore- orec oreo orer oro- oroe oror orot orro ortc orte orto otee oter oto- otoe otoo otor otre otro otte otto ottu otur oucc ouer our- oure ouro ourt out- oute outo ouu- rccc rcet rctc recc rece recr rect recu reet reot reou rere rero rert reru rete reto retr rett reue reut reuu rocc roce roco roer roet roor root rorc rore roro rort roru rotc rote roto rotr rott roue rout rrrr rtcc rtce rtee ruce ruct ruer ruet rurc rure ruro ruru rute ruto rutt rutu tccc tccu tctc teco tecr tect teec teer teet teor ter- terc tere tero terr teru tete teto tetr tett tetu teut toce toco toee toer toet toor toot torc tore toro torr tort toru totc tote toto totr tott tour tout trcc tre- trec tree treo tret treu troc troe troo trot trou trtc trte trtr truc true trut truu tteo tter ttoe tttt tucc tuco tuer tuet tuor turc ture turo turr turt turu tute tuto tutt tutu tuuo ucrc ucut uocc uor- uore ure- uret uro- uroo urre urte urur urut utec uter utor utto uttu uuoc uuuu

-tree c-cor c-tec ccccc ccett ceco- ceere ceoce ceoor cerc- cerce cerco cerec cerer ceret cero- ceroc cerou cerre cerro certe ceto- cette co-co cocc- cocce cocco coceo cocto cocur coete coeur cooee cooer coore coote corce core- coree corer coreu coro- corot corre corte corto coter cott- cotte cotto cottu couco couer coure court couru couto coutu crece creer creo- creot crete cretu creu- creue croce croco crooe croot crore crote crott crout cruce cruet cruor crure ctree cttee cuero cueto cuoco cuore curce curer curet curre curro curto cutco cutcu cutee cuter cutro cutto ecto- ector ectot eeeee eorre erect erere eroor erore eroto error errtu erte erter eruct etete etoro etour etree etter eturu eucre euro- eurre occur ocoee ocote ocree octet octo- octor oeco- oo-er oocre ooooo orcet oreco oreo- orere orero oroco oroer orout orret orter ortet ortoo oruce oruro orutu otere otero otoce ototo otour otter ottur oture ouert ouoro ource oure- outer outre outro outto r-co- recce recco recet rect- recte recto recue recur recut reece reere rere- reree reret retee reter retro rette retto reuer reuet reute ro-ro rocco rocor rocou roero rooer roore roote rooue rorer roter roto- rotor rotot rotte rotto rouer rouet roure route routt rucer ruere ruete rurec ruter rutte ruutu tecou teoco terce terco teret tereu teror terre terro tert- teruo teter tetr- tetro tette teuto tocco toco- tocut toece toerr toeto toore torce toreo toret torre torro torte torto tortu torue toter toto- totoe totoo totte toure touro toute treco treer treet trere trete trett treut troco troee trott troue trout truce truco truer truro trute ttttt tucet tuctu tuero tuotu turco turet turoc turot turre turro turtu turut tutee tuteo tutor tutte tutto tuuru u-cee ucero uouee ureo- urour urter uruce urucu urutu uter- utero utro- utror utter uttur uturu ututo uuuuu

ceecee cerco- cerete cerote certco ceruce cetore cocco- cococo cocto- coerce coo-er coocoo cooter corect corour corteo cortot coruco coruro cotote cotter cource couret courr- couter crecco creete creote crocco crocer croote croute cruro- curete curour currer curret curror curter curtoe cururo cutcut cutout cuttee cutter cuttoe cuttoo ecotec ecourt ecoute ectro- eerect eototo eroto- errett errour etcetc etoeot ettore ettutu eucort euroto eururo eutere occour occure ocourt ocreo- octett octree octuor oerter oooooo orcure orcutt orrour otocec ottoor ouerre outcut outour outter outtro r-tree recoct recore recour recreo recrue recto- rector recuer recure recurt reroot retece reteer reteet reteoo retere retore retort retour retree retret retro- retrot retter rettur returu reuere reuour reuter reutte rococo rocoto rooter rootte rorter rotour rotout rotrou rotter roture roucou