netop entop nteop tneop etnop tenop neotp enotp noetp onetp eontp oentp ntoep tnoep notep ontep tonep otnep etonp teonp eotnp oetnp toenp otenp netpo entpo ntepo tnepo etnpo tenpo nepto enpto npeto pneto epnto pento ntpeo tnpeo npteo pnteo tpneo ptneo etpno tepno eptno petno tpeno pteno neopt enopt noept onept eonpt oenpt nepot enpot npeot pneot epnot penot nopet onpet npoet pnoet opnet ponet eopnt oepnt epont peont opent poent ntope tnope notpe ontpe tonpe otnpe ntpoe tnpoe nptoe pntoe tpnoe ptnoe nopte onpte npote pnote opnte ponte topne otpne tpone ptone optne potne etopn teopn eotpn oetpn toepn otepn etpon tepon epton peton tpeon pteon eoptn oeptn epotn peotn opetn poetn topen otpen tpoen ptoen opten poten
Note: these 'words' (valid or invalid) are all the permutations of the word netop. These words are obtained by scrambling the letters in netop.