stewp tsewp setwp estwp teswp etswp stwep tswep swtep wstep twsep wtsep sewtp eswtp swetp wsetp ewstp westp tewsp etwsp twesp wtesp ewtsp wetsp stepw tsepw setpw estpw tespw etspw stpew tspew sptew pstew tpsew ptsew septw esptw spetw psetw epstw pestw tepsw etpsw tpesw ptesw eptsw petsw stwpe tswpe swtpe wstpe twspe wtspe stpwe tspwe sptwe pstwe tpswe ptswe swpte wspte spwte pswte wpste pwste twpse wtpse tpwse ptwse wptse pwtse sewpt eswpt swept wsept ewspt wespt sepwt espwt spewt psewt epswt peswt swpet wspet spwet pswet wpset pwset ewpst wepst epwst pewst wpest pwest tewps etwps tweps wteps ewtps wetps tepws etpws tpews ptews eptws petws twpes wtpes tpwes ptwes wptes pwtes ewpts wepts epwts pewts wpets pwets
Note: these 'words' (valid or invalid) are all the permutations of the word stewp. These words are obtained by scrambling the letters in stewp.