ippon pipon ippon pipon ppion ppion ipopn piopn ioppn oippn poipn opipn ipopn piopn ioppn oippn poipn opipn ppoin ppoin popin oppin popin oppin ippno pipno ippno pipno ppino ppino ipnpo pinpo inppo nippo pnipo npipo ipnpo pinpo inppo nippo pnipo npipo ppnio ppnio pnpio nppio pnpio nppio iponp pionp iopnp oipnp poinp opinp ipnop pinop inpop nipop pniop npiop ionpp oinpp inopp niopp onipp noipp ponip opnip pnoip npoip onpip nopip iponp pionp iopnp oipnp poinp opinp ipnop pinop inpop nipop pniop npiop ionpp oinpp inopp niopp onipp noipp ponip opnip pnoip npoip onpip nopip pponi pponi popni oppni popni oppni ppnoi ppnoi pnpoi nppoi pnpoi nppoi ponpi opnpi pnopi npopi onppi noppi ponpi opnpi pnopi npopi onppi noppi
Note: these 'words' (valid or invalid) are all the permutations of the word ippon. These words are obtained by scrambling the letters in ippon.