nostp onstp nsotp snotp osntp sontp notsp ontsp ntosp tnosp otnsp tonsp nstop sntop ntsop tnsop stnop tsnop ostnp sotnp otsnp tosnp stonp tsonp nospt onspt nsopt snopt osnpt sonpt nopst onpst npost pnost opnst ponst nspot snpot npsot pnsot spnot psnot ospnt sopnt opsnt posnt spont psont notps ontps ntops tnops otnps tonps nopts onpts npots pnots opnts ponts ntpos tnpos nptos pntos tpnos ptnos otpns topns optns potns tpons ptons nstpo sntpo ntspo tnspo stnpo tsnpo nspto snpto npsto pnsto spnto psnto ntpso tnpso nptso pntso tpnso ptnso stpno tspno sptno pstno tpsno ptsno ostpn sotpn otspn tospn stopn tsopn osptn soptn opstn postn spotn psotn otpsn topsn optsn potsn tposn ptosn stpon tspon spton pston tpson ptson
Note: these 'words' (valid or invalid) are all the permutations of the word nostp. These words are obtained by scrambling the letters in nostp.