shmek hsmek smhek mshek hmsek mhsek shemk hsemk sehmk eshmk hesmk ehsmk smehk msehk semhk esmhk meshk emshk hmesk mhesk hemsk ehmsk mehsk emhsk shmke hsmke smhke mshke hmske mhske shkme hskme skhme kshme hksme khsme smkhe mskhe skmhe ksmhe mkshe kmshe hmkse mhkse hkmse khmse mkhse kmhse shekm hsekm sehkm eshkm heskm ehskm shkem hskem skhem kshem hksem khsem sekhm eskhm skehm ksehm ekshm keshm heksm ehksm hkesm khesm ekhsm kehsm smekh msekh semkh esmkh meskh emskh smkeh mskeh skmeh ksmeh mkseh kmseh sekmh eskmh skemh ksemh eksmh kesmh meksh emksh mkesh kmesh ekmsh kemsh hmeks mheks hemks ehmks mehks emhks hmkes mhkes hkmes khmes mkhes kmhes hekms ehkms hkems khems ekhms kehms mekhs emkhs mkehs kmehs ekmhs kemhs
Note: these 'words' (valid or invalid) are all the permutations of the word shmek. These words are obtained by scrambling the letters in shmek.