hench ehnch hnech nhech enhch nehch hecnh ehcnh hcenh chenh echnh cehnh hnceh nhceh hcneh chneh ncheh cnheh enchh nechh ecnhh cenhh ncehh cnehh henhc ehnhc hnehc nhehc enhhc nehhc hehnc ehhnc hhenc hhenc ehhnc hehnc hnhec nhhec hhnec hhnec nhhec hnhec enhhc nehhc ehnhc henhc nhehc hnehc hechn ehchn hcehn chehn echhn cehhn hehcn ehhcn hhecn hhecn ehhcn hehcn hchen chhen hhcen hhcen chhen hchen echhn cehhn ehchn hechn chehn hcehn hnche nhche hcnhe chnhe nchhe cnhhe hnhce nhhce hhnce hhnce nhhce hnhce hchne chhne hhcne hhcne chhne hchne nchhe cnhhe nhche hnche chnhe hcnhe enchh nechh ecnhh cenhh ncehh cnehh enhch nehch ehnch hench nhech hnech echnh cehnh ehcnh hecnh chenh hcenh ncheh cnheh nhceh hnceh chneh hcneh
Note: these 'words' (valid or invalid) are all the permutations of the word hench. These words are obtained by scrambling the letters in hench.