sneck nseck senck esnck nesck ensck sncek nscek scnek csnek ncsek cnsek secnk escnk scenk csenk ecsnk cesnk necsk encsk ncesk cnesk ecnsk censk snekc nsekc senkc esnkc neskc enskc snkec nskec sknec ksnec nksec knsec seknc esknc skenc ksenc eksnc kesnc neksc enksc nkesc knesc eknsc kensc sncke nscke scnke csnke ncske cnske snkce nskce sknce ksnce nksce knsce sckne cskne skcne kscne cksne kcsne nckse cnkse nkcse kncse cknse kcnse seckn esckn scekn csekn ecskn ceskn sekcn eskcn skecn ksecn ekscn kescn scken csken skcen kscen cksen kcsen ecksn ceksn ekcsn kecsn ckesn kcesn necks encks nceks cneks ecnks cenks nekcs enkcs nkecs knecs ekncs kencs nckes cnkes nkces knces cknes kcnes eckns cekns ekcns kecns ckens kcens
Note: these 'words' (valid or invalid) are all the permutations of the word sneck. These words are obtained by scrambling the letters in sneck.