caaed acaed caaed acaed aaced aaced caead acead ceaad ecaad aecad eacad caead acead ceaad ecaad aecad eacad aaecd aaecd aeacd eaacd aeacd eaacd caade acade caade acade aacde aacde cadae acdae cdaae dcaae adcae dacae cadae acdae cdaae dcaae adcae dacae aadce aadce adace daace adace daace caeda aceda ceada ecada aecda eacda cadea acdea cdaea dcaea adcea dacea cedaa ecdaa cdeaa dceaa edcaa decaa aedca eadca adeca daeca edaca deaca caeda aceda ceada ecada aecda eacda cadea acdea cdaea dcaea adcea dacea cedaa ecdaa cdeaa dceaa edcaa decaa aedca eadca adeca daeca edaca deaca aaedc aaedc aeadc eaadc aeadc eaadc aadec aadec adaec daaec adaec daaec aedac eadac adeac daeac edaac deaac aedac eadac adeac daeac edaac deaac
Note: these 'words' (valid or invalid) are all the permutations of the word caaed. These words are obtained by scrambling the letters in caaed.