nodal ondal ndoal dnoal odnal donal noadl onadl naodl anodl oandl aondl ndaol dnaol nadol andol danol adnol odanl doanl oadnl aodnl daonl adonl nodla ondla ndola dnola odnla donla nolda onlda nloda lnoda olnda londa ndloa dnloa nldoa lndoa dlnoa ldnoa odlna dolna oldna lodna dlona ldona noald onald naold anold oanld aonld nolad onlad nload lnoad olnad lonad nalod anlod nlaod lnaod alnod lanod oalnd aolnd oland loand alond laond ndalo dnalo nadlo andlo danlo adnlo ndlao dnlao nldao lndao dlnao ldnao naldo anldo nlado lnado alndo lando dalno adlno dlano ldano aldno ladno odaln doaln oadln aodln daoln adoln odlan dolan oldan lodan dloan ldoan oaldn aoldn oladn loadn alodn laodn dalon adlon dlaon ldaon aldon ladon
Note: these 'words' (valid or invalid) are all the permutations of the word nodal. These words are obtained by scrambling the letters in nodal.