cnbes ncbes cbnes bcnes nbces bnces cnebs ncebs cenbs ecnbs necbs encbs cbens bcens cebns ecbns becns ebcns nbecs bnecs nebcs enbcs bencs ebncs cnbse ncbse cbnse bcnse nbcse bncse cnsbe ncsbe csnbe scnbe nscbe sncbe cbsne bcsne csbne scbne bscne sbcne nbsce bnsce nsbce snbce bsnce sbnce cnesb ncesb censb ecnsb necsb encsb cnseb ncseb csneb scneb nsceb snceb cesnb ecsnb csenb scenb escnb secnb nescb enscb nsecb snecb esncb sencb cbesn bcesn cebsn ecbsn becsn ebcsn cbsen bcsen csben scben bscen sbcen cesbn ecsbn csebn scebn escbn secbn bescn ebscn bsecn sbecn esbcn sebcn nbesc bnesc nebsc enbsc bensc ebnsc nbsec bnsec nsbec snbec bsnec sbnec nesbc ensbc nsebc snebc esnbc senbc besnc ebsnc bsenc sbenc esbnc sebnc
Note: these 'words' (valid or invalid) are all the permutations of the word cnbes. These words are obtained by scrambling the letters in cnbes.