frump rfump furmp ufrmp rufmp urfmp frmup rfmup fmrup mfrup rmfup mrfup fumrp ufmrp fmurp mfurp umfrp mufrp rumfp urmfp rmufp mrufp umrfp murfp frupm rfupm furpm ufrpm rufpm urfpm frpum rfpum fprum pfrum rpfum prfum fuprm ufprm fpurm pfurm upfrm pufrm rupfm urpfm rpufm prufm uprfm purfm frmpu rfmpu fmrpu mfrpu rmfpu mrfpu frpmu rfpmu fprmu pfrmu rpfmu prfmu fmpru mfpru fpmru pfmru mpfru pmfru rmpfu mrpfu rpmfu prmfu mprfu pmrfu fumpr ufmpr fmupr mfupr umfpr mufpr fupmr ufpmr fpumr pfumr upfmr pufmr fmpur mfpur fpmur pfmur mpfur pmfur umpfr mupfr upmfr pumfr mpufr pmufr rumpf urmpf rmupf mrupf umrpf murpf rupmf urpmf rpumf prumf uprmf purmf rmpuf mrpuf rpmuf prmuf mpruf pmruf umprf muprf upmrf pumrf mpurf pmurf
Note: these 'words' (valid or invalid) are all the permutations of the word frump. These words are obtained by scrambling the letters in frump.