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