mupel umpel mpuel pmuel upmel pumel muepl umepl meupl emupl uempl eumpl mpeul pmeul mepul empul pemul epmul upeml pueml uepml eupml peuml epuml muple umple mpule pmule upmle pumle mulpe umlpe mlupe lmupe ulmpe lumpe mplue pmlue mlpue lmpue plmue lpmue uplme pulme ulpme lupme plume lpume muelp umelp meulp emulp uemlp eumlp mulep umlep mluep lmuep ulmep lumep melup emlup mleup lmeup elmup lemup uelmp eulmp ulemp luemp elump leump mpelu pmelu meplu emplu pemlu epmlu mpleu pmleu mlpeu lmpeu plmeu lpmeu melpu emlpu mlepu lmepu elmpu lempu pelmu eplmu plemu lpemu elpmu lepmu upelm puelm ueplm euplm peulm epulm uplem pulem ulpem lupem pluem lpuem uelpm eulpm ulepm luepm elupm leupm pelum eplum pleum lpeum elpum lepum
Note: these 'words' (valid or invalid) are all the permutations of the word mupel. These words are obtained by scrambling the letters in mupel.