modup omdup mdoup dmoup odmup domup moudp omudp muodp umodp oumdp uomdp mduop dmuop mudop umdop dumop udmop odump doump oudmp uodmp duomp udomp modpu omdpu mdopu dmopu odmpu dompu mopdu ompdu mpodu pmodu opmdu pomdu mdpou dmpou mpdou pmdou dpmou pdmou odpmu dopmu opdmu podmu dpomu pdomu moupd omupd muopd umopd oumpd uompd mopud ompud mpoud pmoud opmud pomud mupod umpod mpuod pmuod upmod pumod oupmd uopmd opumd poumd upomd puomd mdupo dmupo mudpo umdpo dumpo udmpo mdpuo dmpuo mpduo pmduo dpmuo pdmuo mupdo umpdo mpudo pmudo upmdo pumdo dupmo udpmo dpumo pdumo updmo pudmo odupm doupm oudpm uodpm duopm udopm odpum dopum opdum podum dpoum pdoum oupdm uopdm opudm poudm upodm puodm dupom udpom dpuom pduom updom pudom
Note: these 'words' (valid or invalid) are all the permutations of the word modup. These words are obtained by scrambling the letters in modup.