-er c-- ccc cce cco ccr cct ccx ce- cec cee ceo cer cet cex co- coc coe coo cor cot cox crc cre cro crr crt crx ctc cte cto ctr ctt ctx cxc cxo cxr cxt cxx ec- ecc ece eco ecr ect ecx eec eee eeo eer eet eex eo- eoc eoe eoo eor eot erc ere ero err ert etc ete eto etr ett etx ex- exc exe exo exr ext exx oc- occ oco ocr oct ocx oec oee oeo oer oet oex oo- ooc ooo oor oot oox or- orc ore oro orr ort orx ot- otc ote oto otr ott ox- oxc oxo oxt oxx rcc rce rco rcr rct rcx re- rec ree reo rer ret rex roc roe roo ror rot rox rrc rrr rrt rtc rte rto rtr rtt rtx rxr t-x tcc tce tco tcr tct tcx te- tec tee teo ter tet tex to- toc toe too tor tot tox trc tre tro trr trt trx ttc tte tto ttr ttt ttx txe txt xcr xcx xee xer xet xex xoc xoo xor xot xox xrc xrt xrx xtc xtr xtx xxo xxx

cccc ccee ccoc ccrc ccre ccrt cctc cctt cec- cece ceco cect ceec ceor cer- cerc cere cero cert cet- cete ceto cexe coce coco coct coex coot cor- corc core coro corr cort cotc cote coto cott coxe crcc crce crcr cre- crec cree creo cret crex croc croe croo cror crot crrt crtc ctec ctor ctot ctrc cxro cxxx eccc ecce ecco ecct eco- ecot ecrc ecrr ect- ectc ecto eeee eeoc eerc eero eetc eete eext eore eotc eoto er-x ercc erce erec erer eret eroc eroe eroo errc erre erro etcc etco etec etee eter etoe etox etre etro ette etto exco exec exer exo- exor exrx exte extr o-eo occc occt oce ocee ocet ocre ocro ocrr oct- octe octo oec- oecc oeec oere oocr ooer oooo oore oort orce orco ore- orec oreo orer orex oro- oroe oror orot orro ortc orte orto otee oter oto- otoe otoo otor otre otro otte otto oxer oxo- oxox oxxo rccc rcet rctc recc rece recr rect reet reot rere rero rert rete reto retr rett rexx rocc roce roco roer roet roor root roox rorc rore roro rort rotc rote roto rotr rott roxo rrrr rtcc rtce rtee rtex tccc tctc teco tecr tect teec teer teet teor ter- terc tere tero terr tete teto tetr tett tetx text toce toco toee toer toet toor toot torc tore toro torr tort torx totc tote toto totr tott tox- toxo toxt trcc tre- trec tree treo tret trex troc troe troo trot trox trtc trte trtr tteo tter ttoe tttt txtr xeer xer- xero xert xexe xoco xoro xote xoxo xtro xxxo xxxx

-tree c-cor c-tec ccccc ccett ceco- ceere ceoce ceoor cerc- cerce cerco cerec cerer ceret cero- ceroc cerre cerro certe ceto- cette co-co cocc- cocce cocco coceo cocto coete cooee cooer coore coote corce core- coree corer corex coro- corot corre corte corto coter cott- cotte cotto crece creer creo- creot crete croce croco crooe croot crore crote crott ctree cttee ecto- ector ectot eeeee eorre erect erere eroor erore eroto error erte erter etete etext etoro etree etter exect execx exert exore exort exter extre extro ocoee ocote ocree octet octo- octor oeco- oo-er oocre ooooo orcet oreco oreo- orere orero orexo oroco oroer orret orter ortet ortoo otere otero otoce ototo otter oxter r-co- recce recco recet rect- recte recto reece reere reorx rere- reree reret retee reter retex retox retro rette retto rexer ro-ro rocco rocor roero rooer roore roote rorer roter roto- rotor rotot rotox rotte rotto rtext t-rex teoco terce terco teret terex teror terre terro tert- teter tetex tetr- tetro tette texor texte tocco toco- toece toerr toeto toore torce toreo toret torre torro torte torto torxe toter totex toto- totoe totoo totte toxo- treco treer treet trere trete trett troco troee trott ttttt xero- xerox xerte xetec xetex xexex xootr xorro xotox xoxox xtext xtort xtree

ceecee cerco- cerete cerote certco cetore cocco- cococo cocto- coerce coo-er coocoo cooter corect corteo cortex cortot cotote cotter coxcox crecco creete creote crocco crocer croote e-text ecotec ectro- eerect eototo eroto- errett etcetc etoeot ettore excoct excrex exerce exeter exocet exorte extort extro- ocreo- octett octree oerter oooooo otocec ottoor oxeote r-tree recoct recore recreo recto- rector reroot retece reteer reteet reteoo retere retore retort retree retret retro- retrot retter rococo rocoto rooter rootte rorter rotter roxtec t-tree tecto- tector teetee teeter tercer tercet terete terreo terrer terret terrex terror terrot terter tertre tetete tetter texter textor toccer toetoe tooter tootoo torcec torero tororo torret torrox tortor totoro totrot totter tr-rec treece treete tretee trette trexco trotec trotro trotte x-tree xerert xooter xoxoxo

cerreto cert-ee cocotte coercee coercer correct cotorro crocere crottet e-corce ecocert ecoreco eeeroer erecter erector excrete exterro octette ottetto ottrott recetor recetto recorte reerect reexert reteere reterre retrete rettert rettore rococco rootrot roxette tec-tec tercero terere tereto- terreer terrere tetcott tettete texcoco toe-toe too-too torrert tototoo treetee trettre tro-tro trottee trotter xeroxer xxxxxxx

cocoroco corocore corocoro correcte correcto corrette corteore excreter extorter extortor recetter retorter rotortec teetoter tocororo toetotoe toottoot torotoro totterer treeroot xoxoxoxo

correcter corrector ecoterror exerttrex exocortex reco-reco recorrect retrotort roocoocoo rotrooter tortoreto

cerre-tree rococococo rotorooter terrorcore toe-to-toe

cretotortor roto-rooter

teetertotter xxxxxxxxxxxx

teeter-totter tetter-totter

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