bunns ubnns bnuns nbuns unbns nubns bunns ubnns bnuns nbuns unbns nubns bnnus nbnus bnnus nbnus nnbus nnbus unnbs nunbs unnbs nunbs nnubs nnubs bunsn ubnsn bnusn nbusn unbsn nubsn busnn ubsnn bsunn sbunn usbnn subnn bnsun nbsun bsnun sbnun nsbun snbun unsbn nusbn usnbn sunbn nsubn snubn bunsn ubnsn bnusn nbusn unbsn nubsn busnn ubsnn bsunn sbunn usbnn subnn bnsun nbsun bsnun sbnun nsbun snbun unsbn nusbn usnbn sunbn nsubn snubn bnnsu nbnsu bnnsu nbnsu nnbsu nnbsu bnsnu nbsnu bsnnu sbnnu nsbnu snbnu bnsnu nbsnu bsnnu sbnnu nsbnu snbnu nnsbu nnsbu nsnbu snnbu nsnbu snnbu unnsb nunsb unnsb nunsb nnusb nnusb unsnb nusnb usnnb sunnb nsunb snunb unsnb nusnb usnnb sunnb nsunb snunb nnsub nnsub nsnub snnub nsnub snnub
Note: these 'words' (valid or invalid) are all the permutations of the word bunns. These words are obtained by scrambling the letters in bunns.