tolls otlls tlols ltols oltls lotls tolls otlls tlols ltols oltls lotls tllos ltlos tllos ltlos lltos lltos ollts lolts ollts lolts llots llots tolsl otlsl tlosl ltosl oltsl lotsl tosll otsll tsoll stoll ostll sotll tlsol ltsol tslol stlol lstol sltol olstl lostl osltl soltl lsotl slotl tolsl otlsl tlosl ltosl oltsl lotsl tosll otsll tsoll stoll ostll sotll tlsol ltsol tslol stlol lstol sltol olstl lostl osltl soltl lsotl slotl tllso ltlso tllso ltlso lltso lltso tlslo ltslo tsllo stllo lstlo sltlo tlslo ltslo tsllo stllo lstlo sltlo llsto llsto lslto sllto lslto sllto ollst lolst ollst lolst llost llost olslt loslt osllt sollt lsolt slolt olslt loslt osllt sollt lsolt slolt llsot llsot lslot sllot lslot sllot
Note: these 'words' (valid or invalid) are all the permutations of the word tolls. These words are obtained by scrambling the letters in tolls.