floss lfoss folss oflss lofss olfss flsos lfsos fslos sflos lsfos slfos fosls ofsls fsols sfols osfls sofls losfs olsfs lsofs slofs oslfs solfs floss lfoss folss oflss lofss olfss flsos lfsos fslos sflos lsfos slfos fosls ofsls fsols sfols osfls sofls losfs olsfs lsofs slofs oslfs solfs flsso lfsso fslso sflso lsfso slfso flsso lfsso fslso sflso lsfso slfso fsslo sfslo fsslo sfslo ssflo ssflo lssfo slsfo lssfo slsfo sslfo sslfo fossl ofssl fsosl sfosl osfsl sofsl fossl ofssl fsosl sfosl osfsl sofsl fssol sfsol fssol sfsol ssfol ssfol ossfl sosfl ossfl sosfl ssofl ssofl lossf olssf lsosf slosf oslsf solsf lossf olssf lsosf slosf oslsf solsf lssof slsof lssof slsof sslof sslof osslf soslf osslf soslf ssolf ssolf
Note: these 'words' (valid or invalid) are all the permutations of the word floss. These words are obtained by scrambling the letters in floss.