thanx htanx tahnx athnx hatnx ahtnx thnax htnax tnhax nthax hntax nhtax tanhx atnhx tnahx ntahx anthx nathx hantx ahntx hnatx nhatx anhtx nahtx thaxn htaxn tahxn athxn hatxn ahtxn thxan htxan txhan xthan hxtan xhtan taxhn atxhn txahn xtahn axthn xathn haxtn ahxtn hxatn xhatn axhtn xahtn thnxa htnxa tnhxa nthxa hntxa nhtxa thxna htxna txhna xthna hxtna xhtna tnxha ntxha txnha xtnha nxtha xntha hnxta nhxta hxnta xhnta nxhta xnhta tanxh atnxh tnaxh ntaxh antxh natxh taxnh atxnh txanh xtanh axtnh xatnh tnxah ntxah txnah xtnah nxtah xntah anxth naxth axnth xanth nxath xnath hanxt ahnxt hnaxt nhaxt anhxt nahxt haxnt ahxnt hxant xhant axhnt xahnt hnxat nhxat hxnat xhnat nxhat xnhat anxht naxht axnht xanht nxaht xnaht
Note: these 'words' (valid or invalid) are all the permutations of the word thanx. These words are obtained by scrambling the letters in thanx.