sends esnds sneds nseds ensds nesds sedns esdns sdens dsens edsns desns sndes nsdes sdnes dsnes ndses dnses endss nedss ednss denss ndess dness sensd esnsd snesd nsesd enssd nessd sesnd essnd ssend ssend essnd sesnd snsed nssed ssned ssned nssed snsed enssd nessd esnsd sensd nsesd snesd sedsn esdsn sdesn dsesn edssn dessn sesdn essdn ssedn ssedn essdn sesdn sdsen dssen ssden ssden dssen sdsen edssn dessn esdsn sedsn dsesn sdesn sndse nsdse sdnse dsnse ndsse dnsse snsde nssde ssnde ssnde nssde snsde sdsne dssne ssdne ssdne dssne sdsne ndsse dnsse nsdse sndse dsnse sdnse endss nedss ednss denss ndess dness ensds nesds esnds sends nseds sneds edsns desns esdns sedns dsens sdens ndses dnses nsdes sndes dsnes sdnes
Note: these 'words' (valid or invalid) are all the permutations of the word sends. These words are obtained by scrambling the letters in sends.