landau alndau lnadau nladau anldau naldau ladnau aldnau ldanau dlanau adlnau dalnau lndaau nldaau ldnaau dlnaau ndlaau dnlaau andlau nadlau adnlau danlau ndalau dnalau lanadu alnadu lnaadu nlaadu anladu naladu laandu alandu laandu alandu aalndu aalndu lnaadu nlaadu lanadu alnadu naladu anladu analdu naaldu aanldu aanldu naaldu analdu ladanu aldanu ldaanu dlaanu adlanu dalanu laadnu aladnu laadnu aladnu aaldnu aaldnu ldaanu dlaanu ladanu aldanu dalanu adlanu adalnu daalnu aadlnu aadlnu daalnu adalnu lndaau nldaau ldnaau dlnaau ndlaau dnlaau lnadau nladau landau alndau naldau anldau ldanau dlanau ladnau aldnau dalnau adlnau ndalau dnalau nadlau andlau danlau adnlau andalu nadalu adnalu danalu ndaalu dnaalu anadlu naadlu aandlu aandlu naadlu anadlu adanlu daanlu aadnlu aadnlu daanlu adanlu ndaalu dnaalu nadalu andalu danalu adnalu landua alndua lnadua nladua anldua naldua ladnua aldnua ldanua dlanua adlnua dalnua lndaua nldaua ldnaua dlnaua ndlaua dnlaua andlua nadlua adnlua danlua ndalua dnalua lanuda alnuda lnauda nlauda anluda naluda launda alunda luanda ulanda aulnda ualnda lnuada nluada lunada ulnada nulada unlada anulda naulda aunlda uanlda nualda unalda laduna alduna ldauna dlauna adluna daluna laudna aludna luadna uladna auldna ualdna lduana dluana ludana uldana dulana udlana adulna daulna audlna uadlna dualna udalna lnduaa nlduaa ldnuaa dlnuaa ndluaa dnluaa lnudaa nludaa lundaa ulndaa nuldaa unldaa ldunaa dlunaa ludnaa uldnaa dulnaa udlnaa ndulaa dnulaa nudlaa undlaa dunlaa udnlaa andula nadula adnula danula ndaula dnaula anudla naudla aundla uandla nuadla unadla adunla daunla audnla uadnla duanla udanla nduala dnuala nudala undala dunala udnala lanaud alnaud lnaaud nlaaud anlaud nalaud laanud alanud laanud alanud aalnud aalnud lnaaud nlaaud lanaud alnaud nalaud anlaud analud naalud aanlud aanlud naalud analud lanuad alnuad lnauad nlauad anluad naluad launad alunad luanad ulanad aulnad ualnad lnuaad nluaad lunaad ulnaad nulaad unlaad anulad naulad aunlad uanlad nualad unalad laaund alaund laaund alaund aalund aalund lauand aluand luaand ulaand auland ualand lauand aluand luaand ulaand auland ualand aaulnd aaulnd aualnd uaalnd aualnd uaalnd lnauad nlauad lanuad alnuad naluad anluad lnuaad nluaad lunaad ulnaad nulaad unlaad launad alunad luanad ulanad aulnad ualnad naulad anulad nualad unalad aunlad uanlad anauld naauld aanuld aanuld naauld anauld anuald nauald aunald uanald nuaald unaald aaunld aaunld auanld uaanld auanld uaanld nauald anuald nuaald unaald aunald uanald ladaun aldaun ldaaun dlaaun adlaun dalaun laadun aladun laadun aladun aaldun aaldun ldaaun dlaaun ladaun aldaun dalaun adlaun adalun daalun aadlun aadlun daalun adalun laduan alduan ldauan dlauan adluan daluan laudan aludan luadan uladan auldan ualdan lduaan dluaan ludaan uldaan dulaan udlaan adulan daulan audlan uadlan dualan udalan laaudn alaudn laaudn alaudn aaludn aaludn lauadn aluadn luaadn ulaadn auladn ualadn lauadn aluadn luaadn ulaadn auladn ualadn aauldn aauldn aualdn uaaldn aualdn uaaldn ldauan dlauan laduan alduan daluan adluan lduaan dluaan ludaan uldaan dulaan udlaan laudan aludan luadan uladan auldan ualdan daulan adulan dualan udalan audlan uadlan adauln daauln aaduln aaduln daauln adauln adualn daualn audaln uadaln duaaln udaaln aaudln aaudln auadln uaadln auadln uaadln daualn adualn duaaln udaaln audaln uadaln lndaua nldaua ldnaua dlnaua ndlaua dnlaua lnadua nladua landua alndua naldua anldua ldanua dlanua ladnua aldnua dalnua adlnua ndalua dnalua nadlua andlua danlua adnlua lnduaa nlduaa ldnuaa dlnuaa ndluaa dnluaa lnudaa nludaa lundaa ulndaa nuldaa unldaa ldunaa dlunaa ludnaa uldnaa dulnaa udlnaa ndulaa dnulaa nudlaa undlaa dunlaa udnlaa lnauda nlauda lanuda alnuda naluda anluda lnuada nluada lunada ulnada nulada unlada launda alunda luanda ulanda aulnda ualnda naulda anulda nualda unalda aunlda uanlda ldauna dlauna laduna alduna daluna adluna lduana dluana ludana uldana dulana udlana laudna aludna luadna uladna auldna ualdna daulna adulna dualna udalna audlna uadlna ndaula dnaula nadula andula danula adnula nduala dnuala nudala undala dunala udnala naudla anudla nuadla unadla aundla uandla daunla adunla duanla udanla audnla uadnla andaul nadaul adnaul danaul ndaaul dnaaul anadul naadul aandul aandul naadul anadul adanul daanul aadnul aadnul daanul adanul ndaaul dnaaul nadaul andaul danaul adnaul andual nadual adnual danual ndaual dnaual anudal naudal aundal uandal nuadal unadal adunal daunal audnal uadnal duanal udanal nduaal dnuaal nudaal undaal dunaal udnaal anaudl naaudl aanudl aanudl naaudl anaudl anuadl nauadl aunadl uanadl nuaadl unaadl aaundl aaundl auandl uaandl auandl uaandl nauadl anuadl nuaadl unaadl aunadl uanadl adaunl daaunl aadunl aadunl daaunl adaunl aduanl dauanl audanl uadanl duaanl udaanl aaudnl aaudnl auadnl uaadnl auadnl uaadnl dauanl aduanl duaanl udaanl audanl uadanl ndaual dnaual nadual andual danual adnual nduaal dnuaal nudaal undaal dunaal udnaal naudal anudal nuadal unadal aundal uandal daunal adunal duanal udanal audnal uadnal
Note: these 'words' (valid or invalid) are all the permutations of the word landau. These words are obtained by scrambling the letters in landau.