dddd ddot ddre dedd dede dedo deed deer deet deor der- dere dero derr dete deto detr dex- dexe dext do-x dod- dodd dode dodo doer dood door doot dord dore doro dorr dort dotd dote doto dott dred dree dret drod drot dted dtor dtot dtox dttx dtxt dxdr dxed dxrd dxre dxrr dxrt dxrx dxxr dxxx edde eddo ede- eder edex edod eede eeee eero eete eext eode eore eotd eoto er-x erde ered erer eret erod eroe eroo erre erro etee eter etoe etox etre etro ette etto exed exer exo- exod exor exrx exte extr o-eo oddd oded odeo oder odet odex odoo odor odot oedo oere ooer oooo oord oore oort orde ordo ore- ored oreo orer orex oro- oroe oror orot orro orte orto oted otee oter oto- otoe otoo otor otre otro otte otto oxer oxo- oxox oxxo rder redd rede redo redr redx reed reet reod reot rerd rere rero rert retd rete reto retr rett rexx rodd rode rodo roed roer roet rood roor root roox rore roro rort rote roto rotr rott roxo rred rrrr rtdt rtee rtex tdor tedd tede tedx teed teer teet teor ter- tere tero terr tete teto tetr tett tetx text todd tode todo todt toed toee toer toet tood toor toot tord tore toro torr tort torx totd tote toto totr tott tox- toxo toxt tre- tred tree treo tret trex trod troe troo trot trox trte trtr tteo tter ttoe tttt txtr x-ed xeer xer- xero xert xexe xoro xote xoxo xrod xtro xxxo xxxx