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