mulsh umlsh mlush lmush ulmsh lumsh muslh umslh msulh smulh usmlh sumlh mlsuh lmsuh msluh smluh lsmuh slmuh ulsmh lusmh uslmh sulmh lsumh slumh mulhs umlhs mluhs lmuhs ulmhs lumhs muhls umhls mhuls hmuls uhmls humls mlhus lmhus mhlus hmlus lhmus hlmus ulhms luhms uhlms hulms lhums hlums mushl umshl msuhl smuhl usmhl sumhl muhsl umhsl mhusl hmusl uhmsl humsl mshul smhul mhsul hmsul shmul hsmul ushml suhml uhsml husml shuml hsuml mlshu lmshu mslhu smlhu lsmhu slmhu mlhsu lmhsu mhlsu hmlsu lhmsu hlmsu mshlu smhlu mhslu hmslu shmlu hsmlu lshmu slhmu lhsmu hlsmu shlmu hslmu ulshm lushm uslhm sulhm lsuhm sluhm ulhsm luhsm uhlsm hulsm lhusm hlusm ushlm suhlm uhslm huslm shulm hsulm lshum slhum lhsum hlsum shlum hslum
Note: these 'words' (valid or invalid) are all the permutations of the word mulsh. These words are obtained by scrambling the letters in mulsh.