leasr elasr laesr alesr ealsr aelsr lesar elsar lsear slear eslar selar laser alser lsaer slaer asler saler easlr aeslr esalr sealr aselr saelr lears elars laers alers ealrs aelrs leras elras lreas rleas erlas relas lares alres lraes rlaes arles rales earls aerls erals reals arels raels lesra elsra lsera slera eslra selra lersa elrsa lresa rlesa erlsa relsa lsrea slrea lrsea rlsea srlea rslea esrla serla ersla resla srela rsela lasre alsre lsare slare aslre salre larse alrse lrase rlase arlse ralse lsrae slrae lrsae rlsae srlae rslae asrle sarle arsle rasle srale rsale easrl aesrl esarl searl aserl saerl earsl aersl erasl reasl aresl raesl esral seral ersal resal sreal rseal asrel sarel arsel rasel srael rsael
Note: these 'words' (valid or invalid) are all the permutations of the word leasr. These words are obtained by scrambling the letters in leasr.