merls emrls mrels rmels ermls remls melrs emlrs mlers lmers elmrs lemrs mrles rmles mlres lmres rlmes lrmes erlms relms elrms lerms rlems lrems mersl emrsl mresl rmesl ermsl remsl mesrl emsrl mserl smerl esmrl semrl mrsel rmsel msrel smrel rsmel srmel ersml resml esrml serml rseml sreml melsr emlsr mlesr lmesr elmsr lemsr meslr emslr mselr smelr esmlr semlr mlser lmser msler smler lsmer slmer elsmr lesmr eslmr selmr lsemr slemr mrlse rmlse mlrse lmrse rlmse lrmse mrsle rmsle msrle smrle rsmle srmle mlsre lmsre mslre smlre lsmre slmre rlsme lrsme rslme srlme lsrme slrme erlsm relsm elrsm lersm rlesm lresm erslm reslm esrlm serlm rselm srelm elsrm lesrm eslrm selrm lserm slerm rlsem lrsem rslem srlem lsrem slrem
Note: these 'words' (valid or invalid) are all the permutations of the word merls. These words are obtained by scrambling the letters in merls.