sundog usndog snudog nsudog unsdog nusdog sudnog usdnog sdunog dsunog udsnog dusnog snduog nsduog sdnuog dsnuog ndsuog dnsuog undsog nudsog udnsog dunsog ndusog dnusog sunodg usnodg snuodg nsuodg unsodg nusodg suondg usondg soundg osundg uosndg ousndg snoudg nsoudg sonudg osnudg nosudg onsudg unosdg nuosdg uonsdg ounsdg nousdg onusdg sudong usdong sduong dsuong udsong dusong suodng usodng soudng osudng uosdng ousdng sdoung dsoung sodung osdung dosung odsung udosng duosng uodsng oudsng dousng odusng sndoug nsdoug sdnoug dsnoug ndsoug dnsoug snodug nsodug sondug osndug nosdug onsdug sdonug dsonug sodnug osdnug dosnug odsnug ndosug dnosug nodsug ondsug donsug odnsug undosg nudosg udnosg dunosg nduosg dnuosg unodsg nuodsg uondsg oundsg noudsg onudsg udonsg duonsg uodnsg oudnsg dounsg odunsg ndousg dnousg nodusg ondusg donusg odnusg sundgo usndgo snudgo nsudgo unsdgo nusdgo sudngo usdngo sdungo dsungo udsngo dusngo sndugo nsdugo sdnugo dsnugo ndsugo dnsugo undsgo nudsgo udnsgo dunsgo ndusgo dnusgo sungdo usngdo snugdo nsugdo unsgdo nusgdo sugndo usgndo sgundo gsundo ugsndo gusndo sngudo nsgudo sgnudo gsnudo ngsudo gnsudo ungsdo nugsdo ugnsdo gunsdo ngusdo gnusdo sudgno usdgno sdugno dsugno udsgno dusgno sugdno usgdno sgudno gsudno ugsdno gusdno sdguno dsguno sgduno gsduno dgsuno gdsuno udgsno dugsno ugdsno gudsno dgusno gdusno sndguo nsdguo sdnguo dsnguo ndsguo dnsguo sngduo nsgduo sgnduo gsnduo ngsduo gnsduo sdgnuo dsgnuo sgdnuo gsdnuo dgsnuo gdsnuo ndgsuo dngsuo ngdsuo gndsuo dgnsuo gdnsuo undgso nudgso udngso dungso ndugso dnugso ungdso nugdso ugndso gundso ngudso gnudso udgnso dugnso ugdnso gudnso dgunso gdunso ndguso dnguso ngduso gnduso dgnuso gdnuso sunogd usnogd snuogd nsuogd unsogd nusogd suongd usongd soungd osungd uosngd ousngd snougd nsougd sonugd osnugd nosugd onsugd unosgd nuosgd uonsgd ounsgd nousgd onusgd sungod usngod snugod nsugod unsgod nusgod sugnod usgnod sgunod gsunod ugsnod gusnod snguod nsguod sgnuod gsnuod ngsuod gnsuod ungsod nugsod ugnsod gunsod ngusod gnusod suognd usognd sougnd osugnd uosgnd ousgnd sugond usgond sguond gsuond ugsond gusond sogund osgund sgound gsound ogsund gosund uogsnd ougsnd ugosnd guosnd ogusnd gousnd snogud nsogud songud osngud nosgud onsgud sngoud nsgoud sgnoud gsnoud ngsoud gnsoud sognud osgnud sgonud gsonud ogsnud gosnud nogsud ongsud ngosud gnosud ognsud gonsud unogsd nuogsd uongsd oungsd nougsd onugsd ungosd nugosd ugnosd gunosd nguosd gnuosd uognsd ougnsd ugonsd guonsd ogunsd gounsd nogusd ongusd ngousd gnousd ognusd gonusd sudogn usdogn sduogn dsuogn udsogn dusogn suodgn usodgn soudgn osudgn uosdgn ousdgn sdougn dsougn sodugn osdugn dosugn odsugn udosgn duosgn uodsgn oudsgn dousgn odusgn sudgon usdgon sdugon dsugon udsgon dusgon sugdon usgdon sgudon gsudon ugsdon gusdon sdguon dsguon sgduon gsduon dgsuon gdsuon udgson dugson ugdson gudson dguson gduson suogdn usogdn sougdn osugdn uosgdn ousgdn sugodn usgodn sguodn gsuodn ugsodn gusodn sogudn osgudn sgoudn gsoudn ogsudn gosudn uogsdn ougsdn ugosdn guosdn ogusdn gousdn sdogun dsogun sodgun osdgun dosgun odsgun sdgoun dsgoun sgdoun gsdoun dgsoun gdsoun sogdun osgdun sgodun gsodun ogsdun gosdun dogsun odgsun dgosun gdosun ogdsun godsun udogsn duogsn uodgsn oudgsn dougsn odugsn udgosn dugosn ugdosn gudosn dguosn gduosn uogdsn ougdsn ugodsn guodsn ogudsn goudsn dogusn odgusn dgousn gdousn ogdusn godusn sndogu nsdogu sdnogu dsnogu ndsogu dnsogu snodgu nsodgu sondgu osndgu nosdgu onsdgu sdongu dsongu sodngu osdngu dosngu odsngu ndosgu dnosgu nodsgu ondsgu donsgu odnsgu sndgou nsdgou sdngou dsngou ndsgou dnsgou sngdou nsgdou sgndou gsndou ngsdou gnsdou sdgnou dsgnou sgdnou gsdnou dgsnou gdsnou ndgsou dngsou ngdsou gndsou dgnsou gdnsou snogdu nsogdu songdu osngdu nosgdu onsgdu sngodu nsgodu sgnodu gsnodu ngsodu gnsodu sogndu osgndu sgondu gsondu ogsndu gosndu nogsdu ongsdu ngosdu gnosdu ognsdu gonsdu sdognu dsognu sodgnu osdgnu dosgnu odsgnu sdgonu dsgonu sgdonu gsdonu dgsonu gdsonu sogdnu osgdnu sgodnu gsodnu ogsdnu gosdnu dogsnu odgsnu dgosnu gdosnu ogdsnu godsnu ndogsu dnogsu nodgsu ondgsu dongsu odngsu ndgosu dngosu ngdosu gndosu dgnosu gdnosu nogdsu ongdsu ngodsu gnodsu ogndsu gondsu dognsu odgnsu dgonsu gdonsu ogdnsu godnsu undogs nudogs udnogs dunogs nduogs dnuogs unodgs nuodgs uondgs oundgs noudgs onudgs udongs duongs uodngs oudngs doungs odungs ndougs dnougs nodugs ondugs donugs odnugs undgos nudgos udngos dungos ndugos dnugos ungdos nugdos ugndos gundos ngudos gnudos udgnos dugnos ugdnos gudnos dgunos gdunos ndguos dnguos ngduos gnduos dgnuos gdnuos unogds nuogds uongds oungds nougds onugds ungods nugods ugnods gunods nguods gnuods uognds ougnds ugonds guonds ogunds gounds noguds onguds ngouds gnouds ognuds gonuds udogns duogns uodgns oudgns dougns odugns udgons dugons ugdons gudons dguons gduons uogdns ougdns ugodns guodns ogudns goudns doguns odguns dgouns gdouns ogduns goduns ndogus dnogus nodgus ondgus dongus odngus ndgous dngous ngdous gndous dgnous gdnous nogdus ongdus ngodus gnodus ogndus gondus dognus odgnus dgonus gdonus ogdnus godnus
Note: these 'words' (valid or invalid) are all the permutations of the word sundog. These words are obtained by scrambling the letters in sundog.