twerp wterp tewrp etwrp wetrp ewtrp twrep wtrep trwep rtwep wrtep rwtep terwp etrwp trewp rtewp ertwp retwp wertp ewrtp wretp rwetp erwtp rewtp twepr wtepr tewpr etwpr wetpr ewtpr twper wtper tpwer ptwer wpter pwter tepwr etpwr tpewr ptewr eptwr petwr weptr ewptr wpetr pwetr epwtr pewtr twrpe wtrpe trwpe rtwpe wrtpe rwtpe twpre wtpre tpwre ptwre wptre pwtre trpwe rtpwe tprwe ptrwe rptwe prtwe wrpte rwpte wprte pwrte rpwte prwte terpw etrpw trepw rtepw ertpw retpw teprw etprw tperw pterw eptrw petrw trpew rtpew tprew ptrew rptew prtew erptw reptw eprtw pertw rpetw pretw werpt ewrpt wrept rwept erwpt rewpt weprt ewprt wpert pwert epwrt pewrt wrpet rwpet wpret pwret rpwet prwet erpwt repwt eprwt perwt rpewt prewt
Note: these 'words' (valid or invalid) are all the permutations of the word twerp. These words are obtained by scrambling the letters in twerp.