unemc nuemc uenmc eunmc neumc enumc unmec numec umnec munec nmuec mnuec uemnc eumnc umenc muenc emunc meunc nemuc enmuc nmeuc mneuc emnuc menuc unecm nuecm uencm euncm neucm enucm uncem nucem ucnem cunem ncuem cnuem uecnm eucnm ucenm cuenm ecunm ceunm necum encum nceum cneum ecnum cenum unmce numce umnce munce nmuce mnuce uncme nucme ucnme cunme ncume cnume umcne mucne ucmne cumne mcune cmune nmcue mncue ncmue cnmue mcnue cmnue uemcn eumcn umecn muecn emucn meucn uecmn eucmn ucemn cuemn ecumn ceumn umcen mucen ucmen cumen mcuen cmuen emcun mecun ecmun cemun mceun cmeun nemcu enmcu nmecu mnecu emncu mencu necmu encmu ncemu cnemu ecnmu cenmu nmceu mnceu ncmeu cnmeu mcneu cmneu emcnu mecnu ecmnu cemnu mcenu cmenu
Note: these 'words' (valid or invalid) are all the permutations of the word unemc. These words are obtained by scrambling the letters in unemc.