kutch uktch ktuch tkuch utkch tukch kucth ukcth kcuth ckuth uckth cukth ktcuh tkcuh kctuh cktuh tckuh ctkuh utckh tuckh uctkh cutkh tcukh ctukh kuthc ukthc ktuhc tkuhc utkhc tukhc kuhtc ukhtc khutc hkutc uhktc huktc kthuc tkhuc khtuc hktuc thkuc htkuc uthkc tuhkc uhtkc hutkc thukc htukc kucht ukcht kcuht ckuht uckht cukht kuhct ukhct khuct hkuct uhkct hukct kchut ckhut khcut hkcut chkut hckut uchkt cuhkt uhckt huckt chukt hcukt ktchu tkchu kcthu ckthu tckhu ctkhu kthcu tkhcu khtcu hktcu thkcu htkcu kchtu ckhtu khctu hkctu chktu hcktu tchku cthku thcku htcku chtku hctku utchk tuchk ucthk cuthk tcuhk ctuhk uthck tuhck uhtck hutck thuck htuck uchtk cuhtk uhctk huctk chutk hcutk tchuk cthuk thcuk htcuk chtuk hctuk
Note: these 'words' (valid or invalid) are all the permutations of the word kutch. These words are obtained by scrambling the letters in kutch.