luach ulach lauch aluch ualch aulch lucah ulcah lcuah cluah uclah culah lacuh alcuh lcauh clauh acluh caluh uaclh auclh ucalh cualh aculh caulh luahc ulahc lauhc aluhc ualhc aulhc luhac ulhac lhuac hluac uhlac hulac lahuc alhuc lhauc hlauc ahluc haluc uahlc auhlc uhalc hualc ahulc haulc lucha ulcha lcuha cluha uclha culha luhca ulhca lhuca hluca uhlca hulca lchua clhua lhcua hlcua chlua hclua uchla cuhla uhcla hucla chula hcula lachu alchu lcahu clahu aclhu calhu lahcu alhcu lhacu hlacu ahlcu halcu lchau clhau lhcau hlcau chlau hclau achlu cahlu ahclu haclu chalu hcalu uachl auchl ucahl cuahl acuhl cauhl uahcl auhcl uhacl huacl ahucl haucl uchal cuhal uhcal hucal chual hcual achul cahul ahcul hacul chaul hcaul
Note: these 'words' (valid or invalid) are all the permutations of the word luach. These words are obtained by scrambling the letters in luach.