clach lcach calch aclch lacch alcch clcah lccah cclah cclah lccah clcah caclh acclh ccalh ccalh acclh caclh lacch alcch lcach clach aclch calch clahc lcahc calhc aclhc lachc alchc clhac lchac chlac hclac lhcac hlcac cahlc achlc chalc hcalc ahclc haclc lahcc alhcc lhacc hlacc ahlcc halcc clcha lccha cclha cclha lccha clcha clhca lchca chlca hclca lhcca hlcca cchla cchla chcla hccla chcla hccla lchca clhca lhcca hlcca chlca hclca cachl acchl ccahl ccahl acchl cachl cahcl achcl chacl hcacl ahccl haccl cchal cchal chcal hccal chcal hccal achcl cahcl ahccl haccl chacl hcacl lachc alchc lcahc clahc aclhc calhc lahcc alhcc lhacc hlacc ahlcc halcc lchac clhac lhcac hlcac chlac hclac achlc cahlc ahclc haclc chalc hcalc
Note: these 'words' (valid or invalid) are all the permutations of the word clach. These words are obtained by scrambling the letters in clach.