ngoog gnoog nogog ongog gonog ognog ngoog gnoog nogog ongog gonog ognog noogg onogg noogg onogg oongg oongg goong ogong goong ogong oogng oogng ngogo gnogo noggo onggo gongo ogngo nggoo gngoo nggoo gngoo ggnoo ggnoo noggo onggo ngogo gnogo ogngo gongo gogno oggno ggono ggono oggno gogno ngogo gnogo noggo onggo gongo ogngo nggoo gngoo nggoo gngoo ggnoo ggnoo noggo onggo ngogo gnogo ogngo gongo gogno oggno ggono ggono oggno gogno noogg onogg noogg onogg oongg oongg nogog ongog ngoog gnoog ognog gonog nogog ongog ngoog gnoog ognog gonog oogng oogng ogong goong ogong goong googn ogogn googn ogogn ooggn ooggn gogon oggon ggoon ggoon oggon gogon gogon oggon ggoon ggoon oggon gogon ooggn ooggn ogogn googn ogogn googn
Note: these 'words' (valid or invalid) are all the permutations of the word ngoog. These words are obtained by scrambling the letters in ngoog.