caeca aceca ceaca ecaca aecca eacca cacea accea ccaea ccaea accea cacea cecaa eccaa cceaa cceaa eccaa cecaa aecca eacca aceca caeca ecaca ceaca caeac aceac ceaac ecaac aecac eacac caaec acaec caaec acaec aacec aacec ceaac ecaac caeac aceac eacac aecac aeacc eaacc aaecc aaecc eaacc aeacc cacae accae ccaae ccaae accae cacae caace acace caace acace aacce aacce ccaae ccaae cacae accae cacae accae acace caace aacce aacce caace acace cecaa eccaa cceaa cceaa eccaa cecaa ceaca ecaca caeca aceca eacca aecca ccaea ccaea cacea accea cacea accea ecaca ceaca eacca aecca caeca aceca aecac eacac aceac caeac ecaac ceaac aeacc eaacc aaecc aaecc eaacc aeacc acaec caaec aacec aacec caaec acaec ecaac ceaac eacac aecac caeac aceac
Note: these 'words' (valid or invalid) are all the permutations of the word caeca. These words are obtained by scrambling the letters in caeca.