xocd oxcd xcod cxod ocxd coxd xodc oxdc xdoc dxoc odxc doxc xcdo cxdo xdco dxco cdxo dcxo ocdx codx odcx docx cdox dcox
Note: these 'words' (valid or invalid) are all the permutations of the word xocd. These words are obtained by scrambling the letters in xocd.