ursons rusons usrons surons rsuons sruons urosns ruosns uorsns oursns rousns orusns usorns suorns uosrns ousrns sourns osurns rsouns srouns rosuns orsuns soruns osruns ursnos rusnos usrnos surnos rsunos srunos urnsos runsos unrsos nursos rnusos nrusos usnros sunros unsros nusros snuros nsuros rsnuos srnuos rnsuos nrsuos snruos nsruos uronss ruonss uornss ournss rounss orunss urnoss runoss unross nuross rnuoss nruoss uonrss ounrss unorss nuorss onurss nourss ronuss ornuss rnouss nrouss onruss noruss usonrs suonrs uosnrs ousnrs sounrs osunrs usnors sunors unsors nusors snuors nsuors uonsrs ounsrs unosrs nuosrs onusrs nousrs sonurs osnurs snours nsours onsurs nosurs rsonus sronus rosnus orsnus sornus osrnus rsnous srnous rnsous nrsous snrous nsrous ronsus ornsus rnosus nrosus onrsus norsus sonrus osnrus snorus nsorus onsrus nosrus ursosn rusosn usrosn surosn rsuosn sruosn urossn ruossn uorssn ourssn roussn orussn usorsn suorsn uosrsn ousrsn soursn osursn rsousn srousn rosusn orsusn sorusn osrusn ursson russon usrson surson rsuson sruson ursson russon usrson surson rsuson sruson ussron susron ussron susron ssuron ssuron rssuon srsuon rssuon srsuon ssruon ssruon urossn ruossn uorssn ourssn roussn orussn ursosn rusosn usrosn surosn rsuosn sruosn uosrsn ousrsn usorsn suorsn osursn soursn rosusn orsusn rsousn srousn osrusn sorusn usosrn suosrn uossrn oussrn sousrn osusrn ussorn susorn ussorn susorn ssuorn ssuorn uossrn oussrn usosrn suosrn osusrn sousrn sosurn ossurn ssourn ssourn ossurn sosurn rsosun srosun rossun orssun sorsun osrsun rssoun srsoun rssoun srsoun ssroun ssroun rossun orssun rsosun srosun osrsun sorsun sosrun ossrun ssorun ssorun ossrun sosrun ursnso rusnso usrnso surnso rsunso srunso urnsso runsso unrsso nursso rnusso nrusso usnrso sunrso unsrso nusrso snurso nsurso rsnuso srnuso rnsuso nrsuso snruso nsruso urssno russno usrsno sursno rsusno srusno urssno russno usrsno sursno rsusno srusno ussrno susrno ussrno susrno ssurno ssurno rssuno srsuno rssuno srsuno ssruno ssruno urnsso runsso unrsso nursso rnusso nrusso ursnso rusnso usrnso surnso rsunso srunso unsrso nusrso usnrso sunrso nsurso snurso rnsuso nrsuso rsnuso srnuso nsruso snruso usnsro sunsro unssro nussro snusro nsusro ussnro susnro ussnro susnro ssunro ssunro unssro nussro usnsro sunsro nsusro snusro snsuro nssuro ssnuro ssnuro nssuro snsuro rsnsuo srnsuo rnssuo nrssuo snrsuo nsrsuo rssnuo srsnuo rssnuo srsnuo ssrnuo ssrnuo rnssuo nrssuo rsnsuo srnsuo nsrsuo snrsuo snsruo nssruo ssnruo ssnruo nssruo snsruo uronss ruonss uornss ournss rounss orunss urnoss runoss unross nuross rnuoss nruoss uonrss ounrss unorss nuorss onurss nourss ronuss ornuss rnouss nrouss onruss noruss urosns ruosns uorsns oursns rousns orusns ursons rusons usrons surons rsuons sruons uosrns ousrns usorns suorns osurns sourns rosuns orsuns rsouns srouns osruns soruns urnsos runsos unrsos nursos rnusos nrusos ursnos rusnos usrnos surnos rsunos srunos unsros nusros usnros sunros nsuros snuros rnsuos nrsuos rsnuos srnuos nsruos snruos uonsrs ounsrs unosrs nuosrs onusrs nousrs uosnrs ousnrs usonrs suonrs osunrs sounrs unsors nusors usnors sunors nsuors snuors onsurs nosurs osnurs sonurs nsours snours ronsus ornsus rnosus nrosus onrsus norsus rosnus orsnus rsonus sronus osrnus sornus rnsous nrsous rsnous srnous nsrous snrous onsrus nosrus osnrus sonrus nsorus snorus usonsr suonsr uosnsr ousnsr sounsr osunsr usnosr sunosr unsosr nusosr snuosr nsuosr uonssr ounssr unossr nuossr onussr noussr sonusr osnusr snousr nsousr onsusr nosusr usosnr suosnr uossnr oussnr sousnr osusnr ussonr susonr ussonr susonr ssuonr ssuonr uossnr oussnr usosnr suosnr osusnr sousnr sosunr ossunr ssounr ssounr ossunr sosunr usnsor sunsor unssor nussor snusor nsusor ussnor susnor ussnor susnor ssunor ssunor unssor nussor usnsor sunsor nsusor snusor snsuor nssuor ssnuor ssnuor nssuor snsuor uonssr ounssr unossr nuossr onussr noussr uosnsr ousnsr usonsr suonsr osunsr sounsr unsosr nusosr usnosr sunosr nsuosr snuosr onsusr nosusr osnusr sonusr nsousr snousr sonsur osnsur snosur nsosur onssur nossur sosnur ossnur ssonur ssonur ossnur sosnur snsour nssour ssnour ssnour nssour snsour onssur nossur osnsur sonsur nsosur snosur rsonsu sronsu rosnsu orsnsu sornsu osrnsu rsnosu srnosu rnsosu nrsosu snrosu nsrosu ronssu ornssu rnossu nrossu onrssu norssu sonrsu osnrsu snorsu nsorsu onsrsu nosrsu rsosnu srosnu rossnu orssnu sorsnu osrsnu rssonu srsonu rssonu srsonu ssronu ssronu rossnu orssnu rsosnu srosnu osrsnu sorsnu sosrnu ossrnu ssornu ssornu ossrnu sosrnu rsnsou srnsou rnssou nrssou snrsou nsrsou rssnou srsnou rssnou srsnou ssrnou ssrnou rnssou nrssou rsnsou srnsou nsrsou snrsou snsrou nssrou ssnrou ssnrou nssrou snsrou ronssu ornssu rnossu nrossu onrssu norssu rosnsu orsnsu rsonsu sronsu osrnsu sornsu rnsosu nrsosu rsnosu srnosu nsrosu snrosu onsrsu nosrsu osnrsu sonrsu nsorsu snorsu sonsru osnsru snosru nsosru onssru nossru sosnru ossnru ssonru ssonru ossnru sosnru snsoru nssoru ssnoru ssnoru nssoru snsoru onssru nossru osnsru sonsru nsosru snosru
Note: these 'words' (valid or invalid) are all the permutations of the word ursons. These words are obtained by scrambling the letters in ursons.