dddd ddre dedd dede deed deer deet der- dere derr dete deth detr dex- dexe dext dhed dhee dher dred dree dreh dret dted dthd dttx dtxt dxdr dxed dxht dxrd dxre dxrr dxrt dxrx dxxr dxxx edde ede- edeh eder edex eede eeee eete eeth eext ehdd eheh eher ehre ehte er-x erde ered erer eret erre erth etee eter eth- ethe etre ette exed exer exh- exrx exte extr hdtt hedd hede heed heer heet hehe herd here herr hert hete heth hett hex- hexe hext hhex hhhh hree hrte htet httr rder redd rede redh redr redx reed reet rehe reht rerd rere rert retd rete reth retr rett rexx rhee rhet rhex rred rrrr rtdt rtee rtex tedd tede tedx teed teer teet tehr ter- tere terr tete teth tetr tett tetx text thdr the- thed thee ther thet thex thre thtr tre- tred tree tret trex trte trtr tter tttt txtr x-ed xeer xer- xert xexe xxxx