lanch alnch lnach nlach anlch nalch lacnh alcnh lcanh clanh aclnh calnh lncah nlcah lcnah clnah nclah cnlah anclh naclh acnlh canlh ncalh cnalh lanhc alnhc lnahc nlahc anlhc nalhc lahnc alhnc lhanc hlanc ahlnc halnc lnhac nlhac lhnac hlnac nhlac hnlac anhlc nahlc ahnlc hanlc nhalc hnalc lachn alchn lcahn clahn aclhn calhn lahcn alhcn lhacn hlacn ahlcn halcn lchan clhan lhcan hlcan chlan hclan achln cahln ahcln hacln chaln hcaln lncha nlcha lcnha clnha nclha cnlha lnhca nlhca lhnca hlnca nhlca hnlca lchna clhna lhcna hlcna chlna hclna nchla cnhla nhcla hncla chnla hcnla anchl nachl acnhl canhl ncahl cnahl anhcl nahcl ahncl hancl nhacl hnacl achnl cahnl ahcnl hacnl chanl hcanl nchal cnhal nhcal hncal chnal hcnal
Note: these 'words' (valid or invalid) are all the permutations of the word lanch. These words are obtained by scrambling the letters in lanch.