-er eee eeo eer eet eev eex eo- eoe eoo eor eot ere ero err ert erv ete eto etr ett etv etx eve evo evr evt evv ex- exe exo exr ext exx oee oeo oer oet oex oo- ooo oor oot oov oox or- ore oro orr ort orv orx ot- ote oto otr ott otv ov- ove ovo ovv ox- oxo oxt oxx re- ree reo rer ret rev rex roe roo ror rot rov rox rrr rrt rte rto rtr rtt rtv rtx rve rvo rvr rvt rvv rxr t-x te- tee teo ter tet tev tex to- toe too tor tot tov tox tre tro trr trt trv trx tte tto ttr ttt ttv ttx tve tvo tvr tvt tvx txe txt v-e vee veo ver vet vex voe voo vor vot vov vox vre vrr vrt vte vto vtr vtt vtv vtx vvo vvr vvt vvv vxr vxv xee xer xet xev xex xoo xor xot xov xox xrt xrx xtr xtv xtx xvt xxo xxv xxx

eeee eero eete eext eore eoto er-x erer eret erev eroe eroo erre erro erve etee eter etoe etox etre etro ette etto etvo ever evet evex evoe evoo evre exer exo- exor exrx exte extr o-eo oere ooer oooo oore oort ore- oreo orer orex oro- oroe oror orot orro orte orto orve orvr otee oter oto- otoe otoo otor otov otre otro otte otto ovee over ovet ovo- ovoo ovot ovre oxer oxo- oxox oxxo reet reev reot rere rero rert rete reto retr rett reve revo rexx roer roet roev roor root roox rore roro rort rote roto rotr rott rove rovo roxo rrrr rtee rtex rtve rver rxvt teer teet teev teor ter- tere tero terr tete teto tetr tett tetx text toee toer toet toor toot tore toro torr tort torv torx tote toto totr tott tove tovo tox- toxo toxt tre- tree treo tret trev trex troe troo trot trox trte trtr tteo tter ttoe tttt tver tvro tvrr tvtv txtr veer veet veor ver- vere vero vert vete veto vetr veve vevo vext vexx voer voet voor voot vor- vore voro vort vote voto voxx vreo vret vrot vrto vrtx vt-x vver vvvv xeer xer- xero xert xexe xoro xote xove xoxo xtro xxxo xxxv xxxx

-tree eeeee eevee eever eorre erere ereve eroor erore eroto error erte erter etete etext etoro etree etter evere evero everr evert evete evett eveve evoor evote exert exore exort exter extre extro oo-er ooooo oovoo oreo- orere orero orexo oroer orret orter ortet ortoo orvet otere otero ototo otrov otter ottov over- overo overt ovett oxter reere reeve reorx rere- reree reret retee reter retex retox retro rette retto rever revet revox rexer ro-ro roero rooer roore roote roove rorer roter roto- rotor rotot rotox rotte rotto rover rtext rtrev rttov t-rex teret terex teror terre terro tert- terve tervo teter tetex tetov tetr- tetro tette tevet tevot texor texte toerr toeto toore toreo toret torre torro torte torto torve torxe toter totex toto- totoe totoo totte tover tovet tovex toxo- treer treet trere trete trett treve troee trott trove trovo ttttt veere veeve verex verot verre verte verve vetex vette vetto veveo vever vexer vexor voere voore vorre vorte voter votre votto voxeo voxer xero- xerox xerte xetex xexex xootr xorro xotox xover xoxox xtext xtort xtree

e-text eototo eroto- errett etoeot ettore everex everte exeter exorte extort extro- oerter oooooo orever ottoor overer overte oxeote r-tree reever reroot reteer reteet reteoo retere retore retort retree retret retro- retrot retter revere revert revote revtex revver rooter rootte rorter rotter rovere t-tree teetee teeter teevee terete terreo terrer terret terrex terror terrot terter tertre tetete tetovo tetter tevere texter textor toetoe tooter tootoo torero tororo torovo torret torrox tortor torver totoro totrot totter tovero tovore treete tretee trette trevet trevor trotro trotte trover txt-tv veerer veerto veroor verree verrer verret vertex vertre verver vervet vervo vetere vetoer vetovo vetrov vetter vorort vortex voxeet vvvvvv x-tree xerert xooter xoxoxo

e-voter eeeroer erovete errevet everett evertor ex-voto exterro exxv-tv ottetto ottrott overrev ovrette reexert reteere reterre retrete rettert rettore reveree reverer revette rootrot roovere roxette terere tereto- terreer terrere terrove tettete toe-toe too-too toovere torrert totorve tototoo treetee trettre treveer treveor tro-tro trottee trotter veotere verrett verrore verveer veterov vetrovo vettoor vortexx voxtrot vx-rexx xeroxer xxxxxxx

everette extorter extortor ortovero overvote retorter revertee reverter revertto rovereto teetoter toetotoe toottoot torotoro totterer treeroot verretto vervoort vorevere vorovoro vortexer xoxoxoxo

exerttrex extrovert retrotort retrovert rotrooter rove-over tortoreto

rotorooter rottrevore terreverte toe-to-toe

roto-rooter terre-verte

teetertotter xxxxxxxxxxxx

teeter-totter tetter-totter