afecd faecd aefcd eafcd feacd efacd afced faced acfed cafed fcaed cfaed aecfd eacfd acefd caefd ecafd ceafd fecad efcad fcead cfead ecfad cefad afedc faedc aefdc eafdc feadc efadc afdec fadec adfec dafec fdaec dfaec aedfc eadfc adefc daefc edafc deafc fedac efdac fdeac dfeac edfac defac afcde facde acfde cafde fcade cfade afdce fadce adfce dafce fdace dface acdfe cadfe adcfe dacfe cdafe dcafe fcdae cfdae fdcae dfcae cdfae dcfae aecdf eacdf acedf caedf ecadf ceadf aedcf eadcf adecf daecf edacf deacf acdef cadef adcef dacef cdaef dcaef ecdaf cedaf edcaf decaf cdeaf dceaf fecda efcda fceda cfeda ecfda cefda fedca efdca fdeca dfeca edfca defca fcdea cfdea fdcea dfcea cdfea dcfea ecdfa cedfa edcfa decfa cdefa dcefa
Note: these 'words' (valid or invalid) are all the permutations of the word afecd. These words are obtained by scrambling the letters in afecd.