knops nkops konps oknps nokps onkps knpos nkpos kpnos pknos npkos pnkos kopns okpns kpons pkons opkns pokns nopks onpks npoks pnoks opnks ponks knosp nkosp konsp oknsp noksp onksp knsop nksop ksnop sknop nskop snkop kosnp oksnp ksonp skonp osknp soknp noskp onskp nsokp snokp osnkp sonkp knpso nkpso kpnso pknso npkso pnkso knspo nkspo ksnpo sknpo nskpo snkpo kpsno pksno kspno skpno pskno spkno npsko pnsko nspko snpko psnko spnko kopsn okpsn kposn pkosn opksn poksn kospn okspn ksopn skopn oskpn sokpn kpson pkson kspon skpon pskon spkon opskn poskn ospkn sopkn psokn spokn nopsk onpsk nposk pnosk opnsk ponsk nospk onspk nsopk snopk osnpk sonpk npsok pnsok nspok snpok psnok spnok opsnk posnk ospnk sopnk psonk sponk
Note: these 'words' (valid or invalid) are all the permutations of the word knops. These words are obtained by scrambling the letters in knops.