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