hmecu mhecu hemcu ehmcu mehcu emhcu hmceu mhceu hcmeu chmeu mcheu cmheu hecmu ehcmu hcemu chemu echmu cehmu mechu emchu mcehu cmehu ecmhu cemhu hmeuc mheuc hemuc ehmuc mehuc emhuc hmuec mhuec humec uhmec muhec umhec heumc ehumc huemc uhemc euhmc uehmc meuhc emuhc muehc umehc eumhc uemhc hmcue mhcue hcmue chmue mchue cmhue hmuce mhuce humce uhmce muhce umhce hcume chume hucme uhcme cuhme uchme mcuhe cmuhe muche umche cumhe ucmhe hecum ehcum hceum cheum echum cehum heucm ehucm huecm uhecm euhcm uehcm hcuem chuem hucem uhcem cuhem uchem ecuhm ceuhm euchm uechm cuehm ucehm mecuh emcuh mceuh cmeuh ecmuh cemuh meuch emuch muech umech eumch uemch mcueh cmueh muceh umceh cumeh ucmeh ecumh ceumh eucmh uecmh cuemh ucemh
Note: these 'words' (valid or invalid) are all the permutations of the word hmecu. These words are obtained by scrambling the letters in hmecu.