couth ocuth cuoth ucoth oucth uocth cotuh octuh ctouh tcouh otcuh tocuh cutoh uctoh ctuoh tcuoh utcoh tucoh outch uotch otuch touch utoch tuoch couht ocuht cuoht ucoht oucht uocht cohut ochut chout hcout ohcut hocut cuhot uchot chuot hcuot uhcot hucot ouhct uohct ohuct houct uhoct huoct cothu octhu ctohu tcohu otchu tochu cohtu ochtu chotu hcotu ohctu hoctu cthou tchou chtou hctou thcou htcou othcu tohcu ohtcu hotcu thocu htocu cutho uctho ctuho tcuho utcho tucho cuhto uchto chuto hcuto uhcto hucto cthuo tchuo chtuo hctuo thcuo htcuo uthco tuhco uhtco hutco thuco htuco outhc uothc otuhc touhc utohc tuohc ouhtc uohtc ohutc houtc uhotc huotc othuc tohuc ohtuc hotuc thouc htouc uthoc tuhoc uhtoc hutoc thuoc htuoc
Note: these 'words' (valid or invalid) are all the permutations of the word couth. These words are obtained by scrambling the letters in couth.