lctcu cltcu ltccu tlccu ctlcu tclcu lcctu clctu lcctu clctu ccltu ccltu ltccu tlccu lctcu cltcu tclcu ctlcu ctclu tcclu cctlu cctlu tcclu ctclu lctuc cltuc ltcuc tlcuc ctluc tcluc lcutc clutc luctc ulctc cultc ucltc ltucc tlucc lutcc ultcc tulcc utlcc ctulc tculc cutlc uctlc tuclc utclc lccut clcut lccut clcut cclut cclut lcuct cluct lucct ulcct culct uclct lcuct cluct lucct ulcct culct uclct ccult ccult cuclt ucclt cuclt ucclt ltcuc tlcuc lctuc cltuc tcluc ctluc ltucc tlucc lutcc ultcc tulcc utlcc lcutc clutc luctc ulctc cultc ucltc tculc ctulc tuclc utclc cutlc uctlc ctcul tccul cctul cctul tccul ctcul ctucl tcucl cutcl uctcl tuccl utccl ccutl ccutl cuctl ucctl cuctl ucctl tcucl ctucl tuccl utccl cutcl uctcl
Note: these 'words' (valid or invalid) are all the permutations of the word lctcu. These words are obtained by scrambling the letters in lctcu.