kecks ekcks kceks ckeks eckks cekks kekcs ekkcs kkecs kkecs ekkcs kekcs kckes ckkes kkces kkces ckkes kckes eckks cekks ekcks kecks ckeks kceks kecsk ekcsk kcesk ckesk ecksk ceksk kesck eksck kseck skeck eskck sekck kcsek cksek kscek skcek cskek sckek ecskk ceskk esckk seckk csekk scekk keksc ekksc kkesc kkesc ekksc keksc keskc ekskc ksekc skekc eskkc sekkc kksec kksec kskec skkec kskec skkec ekskc keskc eskkc sekkc ksekc skekc kckse ckkse kkcse kkcse ckkse kckse kcske ckske kscke skcke cskke sckke kksce kksce kskce skkce kskce skkce ckske kcske cskke sckke kscke skcke ecksk ceksk ekcsk kecsk ckesk kcesk ecskk ceskk esckk seckk csekk scekk eksck kesck eskck sekck kseck skeck cksek kcsek cskek sckek kscek skcek
Note: these 'words' (valid or invalid) are all the permutations of the word kecks. These words are obtained by scrambling the letters in kecks.