patch aptch ptach tpach atpch tapch pacth apcth pcath cpath acpth capth ptcah tpcah pctah cptah tcpah ctpah atcph tacph actph catph tcaph ctaph pathc apthc ptahc tpahc atphc taphc pahtc aphtc phatc hpatc ahptc haptc pthac tphac phtac hptac thpac htpac athpc tahpc ahtpc hatpc thapc htapc pacht apcht pcaht cpaht acpht capht pahct aphct phact hpact ahpct hapct pchat cphat phcat hpcat chpat hcpat achpt cahpt ahcpt hacpt chapt hcapt ptcha tpcha pctha cptha tcpha ctpha pthca tphca phtca hptca thpca htpca pchta cphta phcta hpcta chpta hcpta tchpa cthpa thcpa htcpa chtpa hctpa atchp tachp acthp cathp tcahp ctahp athcp tahcp ahtcp hatcp thacp htacp achtp cahtp ahctp hactp chatp hcatp tchap cthap thcap htcap chtap hctap
Note: these 'words' (valid or invalid) are all the permutations of the word patch. These words are obtained by scrambling the letters in patch.