grads rgads gards agrds ragds argds grdas rgdas gdras dgras rdgas drgas gadrs agdrs gdars dgars adgrs dagrs radgs ardgs rdags drags adrgs dargs grasd rgasd garsd agrsd ragsd argsd grsad rgsad gsrad sgrad rsgad srgad gasrd agsrd gsard sgard asgrd sagrd rasgd arsgd rsagd sragd asrgd sargd grdsa rgdsa gdrsa dgrsa rdgsa drgsa grsda rgsda gsrda sgrda rsgda srgda gdsra dgsra gsdra sgdra dsgra sdgra rdsga drsga rsdga srdga dsrga sdrga gadsr agdsr gdasr dgasr adgsr dagsr gasdr agsdr gsadr sgadr asgdr sagdr gdsar dgsar gsdar sgdar dsgar sdgar adsgr dasgr asdgr sadgr dsagr sdagr radsg ardsg rdasg drasg adrsg darsg rasdg arsdg rsadg sradg asrdg sardg rdsag drsag rsdag srdag dsrag sdrag adsrg dasrg asdrg sadrg dsarg sdarg
Note: these 'words' (valid or invalid) are all the permutations of the word grads. These words are obtained by scrambling the letters in grads.