spink psink sipnk ispnk pisnk ipsnk spnik psnik snpik nspik pnsik npsik sinpk isnpk snipk nsipk inspk nispk pinsk ipnsk pnisk npisk inpsk nipsk spikn psikn sipkn ispkn piskn ipskn spkin pskin skpin kspin pksin kpsin sikpn iskpn skipn ksipn ikspn kispn piksn ipksn pkisn kpisn ikpsn kipsn spnki psnki snpki nspki pnski npski spkni pskni skpni kspni pksni kpsni snkpi nskpi sknpi ksnpi nkspi knspi pnksi npksi pknsi kpnsi nkpsi knpsi sinkp isnkp snikp nsikp inskp niskp siknp isknp skinp ksinp iksnp kisnp snkip nskip sknip ksnip nksip knsip inksp niksp iknsp kinsp nkisp knisp pinks ipnks pniks npiks inpks nipks pikns ipkns pkins kpins ikpns kipns pnkis npkis pknis kpnis nkpis knpis inkps nikps iknps kinps nkips knips
Note: these 'words' (valid or invalid) are all the permutations of the word spink. These words are obtained by scrambling the letters in spink.