spill psill sipll ispll pisll ipsll splil pslil slpil lspil plsil lpsil silpl islpl slipl lsipl ilspl lispl pilsl iplsl plisl lpisl ilpsl lipsl spill psill sipll ispll pisll ipsll splil pslil slpil lspil plsil lpsil silpl islpl slipl lsipl ilspl lispl pilsl iplsl plisl lpisl ilpsl lipsl splli pslli slpli lspli plsli lpsli splli pslli slpli lspli plsli lpsli sllpi lslpi sllpi lslpi llspi llspi pllsi lplsi pllsi lplsi llpsi llpsi sillp isllp slilp lsilp ilslp lislp sillp isllp slilp lsilp ilslp lislp sllip lslip sllip lslip llsip llsip illsp lilsp illsp lilsp llisp llisp pills iplls plils lpils ilpls lipls pills iplls plils lpils ilpls lipls pllis lplis pllis lplis llpis llpis illps lilps illps lilps llips llips
Note: these 'words' (valid or invalid) are all the permutations of the word spill. These words are obtained by scrambling the letters in spill.