neums enums nuems unems eunms uenms nemus enmus nmeus mneus emnus menus numes unmes nmues mnues umnes munes eumns uemns emuns meuns umens muens neusm enusm nuesm unesm eunsm uensm nesum ensum nseum sneum esnum senum nusem unsem nsuem snuem usnem sunem eusnm uesnm esunm seunm usenm suenm nemsu enmsu nmesu mnesu emnsu mensu nesmu ensmu nsemu snemu esnmu senmu nmseu mnseu nsmeu snmeu msneu smneu emsnu mesnu esmnu semnu msenu smenu numse unmse nmuse mnuse umnse munse nusme unsme nsume snume usnme sunme nmsue mnsue nsmue snmue msnue smnue umsne musne usmne sumne msune smune eumsn uemsn emusn meusn umesn muesn eusmn uesmn esumn seumn usemn suemn emsun mesun esmun semun mseun smeun umsen musen usmen sumen msuen smuen
Note: these 'words' (valid or invalid) are all the permutations of the word neums. These words are obtained by scrambling the letters in neums.