lmach mlach lamch almch malch amlch lmcah mlcah lcmah clmah mclah cmlah lacmh alcmh lcamh clamh aclmh calmh maclh amclh mcalh cmalh acmlh camlh lmahc mlahc lamhc almhc malhc amlhc lmhac mlhac lhmac hlmac mhlac hmlac lahmc alhmc lhamc hlamc ahlmc halmc mahlc amhlc mhalc hmalc ahmlc hamlc lmcha mlcha lcmha clmha mclha cmlha lmhca mlhca lhmca hlmca mhlca hmlca lchma clhma lhcma hlcma chlma hclma mchla cmhla mhcla hmcla chmla hcmla lachm alchm lcahm clahm aclhm calhm lahcm alhcm lhacm hlacm ahlcm halcm lcham clham lhcam hlcam chlam hclam achlm cahlm ahclm haclm chalm hcalm machl amchl mcahl cmahl acmhl camhl mahcl amhcl mhacl hmacl ahmcl hamcl mchal cmhal mhcal hmcal chmal hcmal achml cahml ahcml hacml chaml hcaml
Note: these 'words' (valid or invalid) are all the permutations of the word lmach. These words are obtained by scrambling the letters in lmach.