dbald bdald dabld adbld badld abdld dblad bdlad dlbad ldbad bldad lbdad dalbd adlbd dlabd ldabd aldbd ladbd baldd abldd bladd lbadd albdd labdd dbadl bdadl dabdl adbdl baddl abddl dbdal bddal ddbal ddbal bddal dbdal dadbl addbl ddabl ddabl addbl dadbl baddl abddl bdadl dbadl adbdl dabdl dblda bdlda dlbda ldbda bldda lbdda dbdla bddla ddbla ddbla bddla dbdla dldba lddba ddlba ddlba lddba dldba bldda lbdda bdlda dblda ldbda dlbda daldb adldb dladb ldadb alddb laddb dadlb addlb ddalb ddalb addlb dadlb dldab lddab ddlab ddlab lddab dldab alddb laddb adldb daldb ldadb dladb baldd abldd bladd lbadd albdd labdd badld abdld bdald dbald adbld dabld bldad lbdad bdlad dblad ldbad dlbad aldbd ladbd adlbd dalbd ldabd dlabd
Note: these 'words' (valid or invalid) are all the permutations of the word dbald. These words are obtained by scrambling the letters in dbald.