smurs msurs sumrs usmrs musrs umsrs smrus msrus srmus rsmus mrsus rmsus surms usrms srums rsums ursms rusms murss umrss mruss rmuss urmss rumss smusr msusr sumsr usmsr mussr umssr smsur mssur ssmur ssmur mssur smsur susmr ussmr ssumr ssumr ussmr susmr mussr umssr msusr smusr usmsr sumsr smrsu msrsu srmsu rsmsu mrssu rmssu smsru mssru ssmru ssmru mssru smsru srsmu rssmu ssrmu ssrmu rssmu srsmu mrssu rmssu msrsu smrsu rsmsu srmsu sursm usrsm srusm rsusm urssm russm susrm ussrm ssurm ssurm ussrm susrm srsum rssum ssrum ssrum rssum srsum urssm russm usrsm sursm rsusm srusm murss umrss mruss rmuss urmss rumss musrs umsrs msurs smurs usmrs sumrs mrsus rmsus msrus smrus rsmus srmus ursms rusms usrms surms rsums srums
Note: these 'words' (valid or invalid) are all the permutations of the word smurs. These words are obtained by scrambling the letters in smurs.