sutmm ustmm stumm tsumm utsmm tusmm sumtm usmtm smutm msutm umstm mustm stmum tsmum smtum mstum tmsum mtsum utmsm tumsm umtsm mutsm tmusm mtusm sutmm ustmm stumm tsumm utsmm tusmm sumtm usmtm smutm msutm umstm mustm stmum tsmum smtum mstum tmsum mtsum utmsm tumsm umtsm mutsm tmusm mtusm summt usmmt smumt msumt umsmt musmt summt usmmt smumt msumt umsmt musmt smmut msmut smmut msmut mmsut mmsut ummst mumst ummst mumst mmust mmust stmmu tsmmu smtmu mstmu tmsmu mtsmu stmmu tsmmu smtmu mstmu tmsmu mtsmu smmtu msmtu smmtu msmtu mmstu mmstu tmmsu mtmsu tmmsu mtmsu mmtsu mmtsu utmms tumms umtms mutms tmums mtums utmms tumms umtms mutms tmums mtums ummts mumts ummts mumts mmuts mmuts tmmus mtmus tmmus mtmus mmtus mmtus
Note: these 'words' (valid or invalid) are all the permutations of the word sutmm. These words are obtained by scrambling the letters in sutmm.