ccdaa ccdaa cdcaa dccaa cdcaa dccaa ccada ccada cacda accda cacda accda cdaca dcaca cadca acdca dacca adcca cdaca dcaca cadca acdca dacca adcca ccdaa ccdaa cdcaa dccaa cdcaa dccaa ccada ccada cacda accda cacda accda cdaca dcaca cadca acdca dacca adcca cdaca dcaca cadca acdca dacca adcca ccaad ccaad cacad accad cacad accad ccaad ccaad cacad accad cacad accad caacd acacd caacd acacd aaccd aaccd caacd acacd caacd acacd aaccd aaccd cdaac dcaac cadac acdac dacac adcac cdaac dcaac cadac acdac dacac adcac caadc acadc caadc acadc aacdc aacdc daacc adacc daacc adacc aadcc aadcc cdaac dcaac cadac acdac dacac adcac cdaac dcaac cadac acdac dacac adcac caadc acadc caadc acadc aacdc aacdc daacc adacc daacc adacc aadcc aadcc
Note: these 'words' (valid or invalid) are all the permutations of the word ccdaa. These words are obtained by scrambling the letters in ccdaa.