drugs rdugs durgs udrgs rudgs urdgs drgus rdgus dgrus gdrus rgdus grdus dugrs udgrs dgurs gdurs ugdrs gudrs rugds urgds rguds gruds ugrds gurds drusg rdusg dursg udrsg rudsg urdsg drsug rdsug dsrug sdrug rsdug srdug dusrg udsrg dsurg sdurg usdrg sudrg rusdg ursdg rsudg srudg usrdg surdg drgsu rdgsu dgrsu gdrsu rgdsu grdsu drsgu rdsgu dsrgu sdrgu rsdgu srdgu dgsru gdsru dsgru sdgru gsdru sgdru rgsdu grsdu rsgdu srgdu gsrdu sgrdu dugsr udgsr dgusr gdusr ugdsr gudsr dusgr udsgr dsugr sdugr usdgr sudgr dgsur gdsur dsgur sdgur gsdur sgdur ugsdr gusdr usgdr sugdr gsudr sgudr rugsd urgsd rgusd grusd ugrsd gursd rusgd ursgd rsugd srugd usrgd surgd rgsud grsud rsgud srgud gsrud sgrud ugsrd gusrd usgrd sugrd gsurd sgurd
Note: these 'words' (valid or invalid) are all the permutations of the word drugs. These words are obtained by scrambling the letters in drugs.