ungod nugod ugnod gunod nguod gnuod unogd nuogd uongd oungd nougd onugd ugond guond uognd ougnd gound ogund ngoud gnoud nogud ongud gonud ognud ungdo nugdo ugndo gundo ngudo gnudo undgo nudgo udngo dungo ndugo dnugo ugdno gudno udgno dugno gduno dguno ngduo gnduo ndguo dnguo gdnuo dgnuo unodg nuodg uondg oundg noudg onudg undog nudog udnog dunog nduog dnuog uodng oudng udong duong odung doung nodug ondug ndoug dnoug odnug donug ugodn guodn uogdn ougdn goudn ogudn ugdon gudon udgon dugon gduon dguon uodgn oudgn udogn duogn odugn dougn godun ogdun gdoun dgoun odgun dogun ngodu gnodu nogdu ongdu gondu ogndu ngdou gndou ndgou dngou gdnou dgnou nodgu ondgu ndogu dnogu odngu dongu godnu ogdnu gdonu dgonu odgnu dognu
Note: these 'words' (valid or invalid) are all the permutations of the word ungod. These words are obtained by scrambling the letters in ungod.