cloak lcoak colak oclak locak olcak claok lcaok calok aclok lacok alcok coalk ocalk caolk acolk oaclk aoclk loack olack laock alock oalck aolck cloka lcoka colka oclka locka olcka clkoa lckoa ckloa kcloa lkcoa klcoa cokla ockla ckola kcola okcla kocla lokca olkca lkoca kloca oklca kolca clako lcako calko aclko lacko alcko clkao lckao cklao kclao lkcao klcao caklo acklo ckalo kcalo akclo kaclo lakco alkco lkaco klaco aklco kalco coakl ocakl caokl acokl oackl aockl cokal ockal ckoal kcoal okcal kocal cakol ackol ckaol kcaol akcol kacol oakcl aokcl okacl koacl akocl kaocl loakc olakc laokc alokc oalkc aolkc lokac olkac lkoac kloac oklac kolac lakoc alkoc lkaoc klaoc akloc kaloc oaklc aoklc okalc koalc akolc kaolc
Note: these 'words' (valid or invalid) are all the permutations of the word cloak. These words are obtained by scrambling the letters in cloak.