nugle ungle ngule gnule ugnle gunle nulge unlge nluge lnuge ulnge lunge nglue gnlue nlgue lngue glnue lgnue uglne gulne ulgne lugne glune lgune nugel ungel nguel gnuel ugnel gunel nuegl unegl neugl enugl uengl eungl ngeul gneul negul engul genul egnul ugenl guenl uegnl eugnl geunl egunl nuleg unleg nlueg lnueg ulneg luneg nuelg unelg neulg enulg uenlg eunlg nleug lneug nelug enlug lenug elnug uleng lueng uelng eulng leung elung ngleu gnleu nlgeu lngeu glneu lgneu ngelu gnelu neglu englu genlu egnlu nlegu lnegu nelgu enlgu lengu elngu glenu lgenu gelnu eglnu legnu elgnu uglen gulen ulgen lugen gluen lguen ugeln gueln uegln eugln geuln eguln ulegn luegn uelgn eulgn leugn elugn gleun lgeun gelun eglun legun elgun
Note: these 'words' (valid or invalid) are all the permutations of the word nugle. These words are obtained by scrambling the letters in nugle.