flirs lfirs filrs iflrs lifrs ilfrs flris lfris frlis rflis lrfis rlfis firls ifrls frils rfils irfls rifls lirfs ilrfs lrifs rlifs irlfs rilfs flisr lfisr filsr iflsr lifsr ilfsr flsir lfsir fslir sflir lsfir slfir fislr ifslr fsilr sfilr isflr siflr lisfr ilsfr lsifr slifr islfr silfr flrsi lfrsi frlsi rflsi lrfsi rlfsi flsri lfsri fslri sflri lsfri slfri frsli rfsli fsrli sfrli rsfli srfli lrsfi rlsfi lsrfi slrfi rslfi srlfi firsl ifrsl frisl rfisl irfsl rifsl fisrl ifsrl fsirl sfirl isfrl sifrl frsil rfsil fsril sfril rsfil srfil irsfl risfl isrfl sirfl rsifl srifl lirsf ilrsf lrisf rlisf irlsf rilsf lisrf ilsrf lsirf slirf islrf silrf lrsif rlsif lsrif slrif rslif srlif irslf rislf isrlf sirlf rsilf srilf
Note: these 'words' (valid or invalid) are all the permutations of the word flirs. These words are obtained by scrambling the letters in flirs.