pilum iplum plium lpium ilpum lipum piulm ipulm puilm upilm iuplm uiplm pluim lpuim pulim uplim lupim ulpim ilupm liupm iulpm uilpm luipm ulipm pilmu iplmu plimu lpimu ilpmu lipmu pimlu ipmlu pmilu mpilu implu miplu plmiu lpmiu pmliu mpliu lmpiu mlpiu ilmpu limpu imlpu milpu lmipu mlipu piuml ipuml puiml upiml iupml uipml pimul ipmul pmiul mpiul impul mipul pumil upmil pmuil mpuil umpil mupil iumpl uimpl imupl miupl umipl muipl plumi lpumi pulmi uplmi lupmi ulpmi plmui lpmui pmlui mplui lmpui mlpui pumli upmli pmuli mpuli umpli mupli lumpi ulmpi lmupi mlupi umlpi mulpi ilump liump iulmp uilmp luimp ulimp ilmup limup imlup milup lmiup mliup iumlp uimlp imulp miulp umilp muilp lumip ulmip lmuip mluip umlip mulip
Note: these 'words' (valid or invalid) are all the permutations of the word pilum. These words are obtained by scrambling the letters in pilum.