plast lpast palst aplst lapst alpst plsat lpsat pslat splat lspat slpat paslt apslt psalt spalt asplt saplt laspt alspt lsapt slapt aslpt salpt plats lpats palts aplts lapts alpts pltas lptas ptlas tplas ltpas tlpas patls aptls ptals tpals atpls tapls latps altps ltaps tlaps atlps talps plsta lpsta pslta splta lspta slpta pltsa lptsa ptlsa tplsa ltpsa tlpsa pstla sptla ptsla tpsla stpla tspla lstpa sltpa ltspa tlspa stlpa tslpa pastl apstl psatl spatl asptl saptl patsl aptsl ptasl tpasl atpsl tapsl pstal sptal ptsal tpsal stpal tspal astpl satpl atspl taspl stapl tsapl lastp alstp lsatp slatp asltp saltp latsp altsp ltasp tlasp atlsp talsp lstap sltap ltsap tlsap stlap tslap astlp satlp atslp taslp stalp tsalp
Note: these 'words' (valid or invalid) are all the permutations of the word plast. These words are obtained by scrambling the letters in plast.