dddd ddre dedd dede deed deef deem deer defe deff dem- demd deme der- dere derf derm derr dfer dfrf dred dree dref drem edde eddm ede- edem eder edme edrm eede eeee eefe efmd emer emme emre erde erdf ered erem erer erme erre fede feed feem feer fefe feff feme femm ferd fere ferm ferr ffee ffff ffrr fred free frem mddm mdef mdme mdmf medd mede meed meef meem meer mefe meff meme memr mer- merd mere merf merm mmdf mmfd mmff mmmd mmmm mmrf mrdd mred mree mrmd rder redd rede redr reed reef reem refd refe reff refr reme rerd rere rfef rfem rred rrrr