-er ddd dde ddf ddo ddr ddt de- ded dee def deo der det dfd dfe dff dfo dfr dft dod doe dof doo dor dot drd dre dro drr drt dtd dte dtf dto dtr dtt ed- edd ede edf edo edr edt eed eee eef eeo eer eet ef- efd efe eff efo efr eft eo- eod eoe eof eoo eor eot erd ere erf ero err ert etd ete etf eto etr ett fdd fde fdf fdo fdr fdt fed fee fef feo fer fet ffd ffe fff ffo ffr fft foe fof foo for fot frd fre frf fro frr frt ftd fte ftf fto ftr ftt odd ode odf odo odr odt oed oee oef oeo oer oet of- ofd ofe off ofo ofr oft oo- ood oof ooo oor oot or- ord ore orf oro orr ort ot- otd ote otf oto otr ott rdd rde rdf rdo rdr rdt re- red ree ref reo rer ret rfd rfe rff rfo rfr rft rod roe rof roo ror rot rrd rrf rrr rrt rtd rte rtf rto rtr rtt tdd tde tdf tdo tdr tdt te- ted tee tef teo ter tet tfd tfe tff tfo tfr tft to- tod toe tof too tor tot trd tre trf tro trr trt ttd tte ttf tto ttr ttt

dddd ddot ddre dedd dede dedo deed deef deer deet defe deff defo deft deor der- dere derf dero derr dete deto detr dfdt dfer dfoe dfrf dftr dod- dodd dode dodo doer doff dood doof door doot dord dore dorf doro dorr dort dotd dote doto dott dred dree dref dret drod drof drot dted dtor dtot edde eddo ede- eder edod eede eeee eefe eero eete efeo efet efor eft- eode eore eotd eoto erde erdf ered erer eret erft erod eroe eroo erre erro etee eter etfe etoe etre etro ette etto fdot fede feed feer feet fefe feff fefo feod feof ferd fere fero ferr fert fete fetr fett ffee ffff ffrr fftf fode foed foer fofo food foof foot for- ford fore foro forr fort fote foto fott fred free freo fret froe frot fter o-eo oddd oded odeo oder odet odoo odor odot oedo oere ofdr ofer off- offe offo offr ofor ofre ooer ooff oooo oord oore oort orde ordo ore- ored oreo orer orfe orff oro- oroe orof oror orot orro orte orto oted otee oter oto- otoe otof otoo otor otre otro otte otto rder redd rede redo redr reed reef reet refd refe reff refr reft reod reof reot rerd rere rero rert retd rete reto retr rett rfef rodd rode rodo roed roer roet rofe roff rofo rood roof roor root rore roro rort rote roto rotr rott rred rrrr rtdt rtee tdff tdor tedd tede teed teef teer teet teff teft teor ter- tere terf tero terr tete teto tetr tett tfot todd tode todo todt toed toee toer toet toff tofo toft tood toof toor toot tord tore torf toro torr tort totd tote toto totr tott tre- tred tree tref treo tret trfd trfr trod troe troo trot trte trtr tteo tter ttff ttoe tttt

-tree d-dot d-rod ddddd dedde dedee deder deede deefe deeff deere defed defeo defer defet deffe deffo defoe defot deore deoro derde dered dero- derre derro deter detoo detre dette do-do dodoo dodro doerr dofor doodo doore doote dordt dored doree doret dorff dorot dorre dorte doted doter dotoo dotto drdre dredd drede dreed dreff dreft dreof drere drode drofe droff drood droof drote drott e-dee e-otd edder eddoe eddre edeo- edere edfor edoor edott edred eeeee eefde eerde efere efetf effed effer effet efore efter eofor eorre erdor erdre erede erere erfde erode erodr eroor erore eroto erred error erte erter etete etoro etree etter fedde fedee feder fedor fedto feeor feere fefor feode feoff feood ferde fered feret ferr- ferre ferro ferte feted feter feto- fetor fette fodor foord foore foote ford- forde fordo fore- foreo foret forro forte forto fotte frede fredo freed freer freet frere frett frodo froed frood froot frore frote ftord ftrtt o-fer odder odeto odore odttf offed offer offof offre offto ofoto ofter oo-er ooooo order ordet ordre ordro oredo oreed oreo- orere orero orfeo orfoe orfor orodo oroer orret orter ortet ortoo otere otero ototo otter redde reder redor redot reede reefe reeft reere refed refer refet reffe reffo reord rerde rere- reree reret reted retee reter retro rette retto ro-ro rodde roded rodef rodeo roder rodor roero roffe rofor roode rooer roofe rooft roore roote rorer roted roter roto- rotor rotot rotte rotto tedef teder teerd tefe teodo teret teror terre terro tert- teter tetr- tetro tette to-do toder todor toeof toerr toeto tofet toffo tofor tofte toode tooed toord toore torde tored toreo toret torre torro torte torto toted toter toto- totoe totoo totte treed treer treet trefe treff trere trete trett trode troee trofe troff troft trood trott ttttt

de-err dededo deeded deedee deeder deedto defete deffer deford defore defter deodeo deorro derere derfde derrer dertod deterr detete detort detter dodded dodder dododo doffed doffer doofer doored doorto dooted dorfer dorood dororo dorred dorree dorter dotdot dotodo dotted dotter dreder droffe droofe effere effete effode effoff efford effore effort efreet efter- eored eototo eroded eroder eroto- errett etoeot ettore fedder federd feeded feedee feeder feedto feered feeror feetof feodor feofor ferder ferede ferfer ferodo ferred ferrer ferret ferro- ferrod fertee ferter fertod fetter fforde fodder foerde foerre foeto- foetor fooder foofoo footed footer forded foredo forrer forrot forted fortee forter freddo fredro freeof freeto frefre frette froofe fterer fterre odette odored oerter ofdoor oferre offeet offerd offord offred ofrede oftfor oofotr oooooo oordoo orford otford ottoor r-tree redded redder reddot redere redfoo redoer redred redroe redrot redted reeded reeder reefed reefer reeffe refeed refeet refeff refert refete reffed refoot reford refret refter rerode reroof reroot reteed reteer reteet reteoo retere retore retort retree retret retro- retrod retrot