imcru micru icmru cimru mciru cmiru imrcu mircu irmcu rimcu mricu rmicu icrmu cirmu ircmu ricmu crimu rcimu mcriu cmriu mrciu rmciu crmiu rcmiu imcur micur icmur cimur mciur cmiur imucr miucr iumcr uimcr muicr umicr icumr ciumr iucmr uicmr cuimr ucimr mcuir cmuir mucir umcir cumir ucmir imruc miruc irmuc rimuc mriuc rmiuc imurc miurc iumrc uimrc muirc umirc irumc riumc iurmc uirmc ruimc urimc mruic rmuic muric umric rumic urmic icrum cirum ircum ricum crium rcium icurm ciurm iucrm uicrm cuirm ucirm irucm riucm iurcm uircm ruicm uricm cruim rcuim curim ucrim rucim urcim mcrui cmrui mrcui rmcui crmui rcmui mcuri cmuri mucri umcri cumri ucmri mruci rmuci murci umrci rumci urmci crumi rcumi curmi ucrmi rucmi urcmi
Note: these 'words' (valid or invalid) are all the permutations of the word imcru. These words are obtained by scrambling the letters in imcru.