pkemu kpemu pekmu epkmu kepmu ekpmu pkmeu kpmeu pmkeu mpkeu kmpeu mkpeu pemku epmku pmeku mpeku empku mepku kempu ekmpu kmepu mkepu emkpu mekpu pkeum kpeum pekum epkum kepum ekpum pkuem kpuem pukem upkem kupem ukpem peukm epukm puekm upekm eupkm uepkm keupm ekupm kuepm ukepm eukpm uekpm pkmue kpmue pmkue mpkue kmpue mkpue pkume kpume pukme upkme kupme ukpme pmuke mpuke pumke upmke mupke umpke kmupe mkupe kumpe ukmpe mukpe umkpe pemuk epmuk pmeuk mpeuk empuk mepuk peumk epumk puemk upemk eupmk uepmk pmuek mpuek pumek upmek mupek umpek emupk meupk eumpk uempk muepk umepk kemup ekmup kmeup mkeup emkup mekup keump ekump kuemp ukemp eukmp uekmp kmuep mkuep kumep ukmep mukep umkep emukp meukp eumkp uemkp muekp umekp
Note: these 'words' (valid or invalid) are all the permutations of the word pkemu. These words are obtained by scrambling the letters in pkemu.