drums rdums durms udrms rudms urdms drmus rdmus dmrus mdrus rmdus mrdus dumrs udmrs dmurs mdurs umdrs mudrs rumds urmds rmuds mruds umrds murds drusm rdusm dursm udrsm rudsm urdsm drsum rdsum dsrum sdrum rsdum srdum dusrm udsrm dsurm sdurm usdrm sudrm rusdm ursdm rsudm srudm usrdm surdm drmsu rdmsu dmrsu mdrsu rmdsu mrdsu drsmu rdsmu dsrmu sdrmu rsdmu srdmu dmsru mdsru dsmru sdmru msdru smdru rmsdu mrsdu rsmdu srmdu msrdu smrdu dumsr udmsr dmusr mdusr umdsr mudsr dusmr udsmr dsumr sdumr usdmr sudmr dmsur mdsur dsmur sdmur msdur smdur umsdr musdr usmdr sumdr msudr smudr rumsd urmsd rmusd mrusd umrsd mursd rusmd ursmd rsumd srumd usrmd surmd rmsud mrsud rsmud srmud msrud smrud umsrd musrd usmrd sumrd msurd smurd
Note: these 'words' (valid or invalid) are all the permutations of the word drums. These words are obtained by scrambling the letters in drums.