caibb acibb ciabb icabb aicbb iacbb cabib acbib cbaib bcaib abcib bacib cibab icbab cbiab bciab ibcab bicab aibcb iabcb abicb baicb ibacb biacb caibb acibb ciabb icabb aicbb iacbb cabib acbib cbaib bcaib abcib bacib cibab icbab cbiab bciab ibcab bicab aibcb iabcb abicb baicb ibacb biacb cabbi acbbi cbabi bcabi abcbi bacbi cabbi acbbi cbabi bcabi abcbi bacbi cbbai bcbai cbbai bcbai bbcai bbcai abbci babci abbci babci bbaci bbaci cibba icbba cbiba bciba ibcba bicba cibba icbba cbiba bciba ibcba bicba cbbia bcbia cbbia bcbia bbcia bbcia ibbca bibca ibbca bibca bbica bbica aibbc iabbc abibc baibc ibabc biabc aibbc iabbc abibc baibc ibabc biabc abbic babic abbic babic bbaic bbaic ibbac bibac ibbac bibac bbiac bbiac
Note: these 'words' (valid or invalid) are all the permutations of the word caibb. These words are obtained by scrambling the letters in caibb.