icada ciada iacda aicda caida acida icdaa cidaa idcaa dicaa cdiaa dciaa iadca aidca idaca diaca adica daica cadia acdia cdaia dcaia adcia dacia icaad ciaad iacad aicad caiad aciad icaad ciaad iacad aicad caiad aciad iaacd aiacd iaacd aiacd aaicd aaicd caaid acaid caaid acaid aacid aacid icdaa cidaa idcaa dicaa cdiaa dciaa icada ciada iacda aicda caida acida idaca diaca iadca aidca daica adica cdaia dcaia cadia acdia dacia adcia iadac aidac idaac diaac adiac daiac iaadc aiadc iaadc aiadc aaidc aaidc idaac diaac iadac aidac daiac adiac adaic daaic aadic aadic daaic adaic cadai acdai cdaai dcaai adcai dacai caadi acadi caadi acadi aacdi aacdi cdaai dcaai cadai acdai dacai adcai adaci daaci aadci aadci daaci adaci
Note: these 'words' (valid or invalid) are all the permutations of the word icada. These words are obtained by scrambling the letters in icada.