apnad panad anpad napad pnaad npaad apand paand aapnd aapnd paand apand anapd naapd aanpd aanpd naapd anapd pnaad npaad panad apnad napad anpad apnda panda anpda napda pnada npada apdna padna adpna dapna pdana dpana andpa nadpa adnpa danpa ndapa dnapa pndaa npdaa pdnaa dpnaa ndpaa dnpaa apadn paadn aapdn aapdn paadn apadn apdan padan adpan dapan pdaan dpaan aadpn aadpn adapn daapn adapn daapn padan apdan pdaan dpaan adpan dapan anadp naadp aandp aandp naadp anadp andap nadap adnap danap ndaap dnaap aadnp aadnp adanp daanp adanp daanp nadap andap ndaap dnaap adnap danap pnada npada panda apnda napda anpda pndaa npdaa pdnaa dpnaa ndpaa dnpaa padna apdna pdana dpana adpna dapna nadpa andpa ndapa dnapa adnpa danpa
Note: these 'words' (valid or invalid) are all the permutations of the word apnad. These words are obtained by scrambling the letters in apnad.