ristra irstra rsitra sritra isrtra sirtra ritsra irtsra rtisra trisra itrsra tirsra rstira srtira rtsira trsira strira tsrira istrra sitrra itsrra tisrra stirra tsirra risrta irsrta rsirta srirta isrrta sirrta rirsta irrsta rrista rrista irrsta rirsta rsrita srrita rrsita rrsita srrita rsrita isrrta sirrta irsrta risrta srirta rsirta ritrsa irtrsa rtirsa trirsa itrrsa tirrsa rirtsa irrtsa rritsa rritsa irrtsa rirtsa rtrisa trrisa rrtisa rrtisa trrisa rtrisa itrrsa tirrsa irtrsa ritrsa trirsa rtirsa rstria srtria rtsria trsria strria tsrria rsrtia srrtia rrstia rrstia srrtia rsrtia rtrsia trrsia rrtsia rrtsia trrsia rtrsia strria tsrria srtria rstria trsria rtsria istrra sitrra itsrra tisrra stirra tsirra isrtra sirtra irstra ristra sritra rsitra itrsra tirsra irtsra ritsra trisra rtisra strira tsrira srtira rstira trsira rtsira ristar irstar rsitar sritar isrtar sirtar ritsar irtsar rtisar trisar itrsar tirsar rstiar srtiar rtsiar trsiar striar tsriar istrar sitrar itsrar tisrar stirar tsirar risatr irsatr rsiatr sriatr isratr siratr riastr irastr raistr aristr iarstr airstr rsaitr sraitr rasitr arsitr saritr asritr isartr siartr iasrtr aisrtr sairtr asirtr ritasr irtasr rtiasr triasr itrasr tirasr riatsr iratsr raitsr aritsr iartsr airtsr rtaisr traisr ratisr artisr tarisr atrisr itarsr tiarsr iatrsr aitrsr tairsr atirsr rstair srtair rtsair trsair strair tsrair rsatir sratir rastir arstir sartir asrtir rtasir trasir ratsir artsir tarsir atrsir starir tsarir satrir astrir tasrir atsrir istarr sitarr itsarr tisarr stiarr tsiarr isatrr siatrr iastrr aistrr saitrr asitrr itasrr tiasrr iatsrr aitsrr taisrr atisrr stairr tsairr satirr astirr tasirr atsirr risrat irsrat rsirat srirat isrrat sirrat rirsat irrsat rrisat rrisat irrsat rirsat rsriat srriat rrsiat rrsiat srriat rsriat isrrat sirrat irsrat risrat srirat rsirat risart irsart rsiart sriart isrart sirart riasrt irasrt raisrt arisrt iarsrt airsrt rsairt srairt rasirt arsirt sarirt asrirt isarrt siarrt iasrrt aisrrt sairrt asirrt rirast irrast rriast rriast irrast rirast riarst irarst rairst arirst iarrst airrst rraist rraist rarist arrist rarist arrist irarst riarst iarrst airrst rairst arirst rsrait srrait rrsait rrsait srrait rsrait rsarit srarit rasrit arsrit sarrit asrrit rrasit rrasit rarsit arrsit rarsit arrsit srarit rsarit sarrit asrrit rasrit arsrit isrart sirart irsart risart sriart rsiart isarrt siarrt iasrrt aisrrt sairrt asirrt irasrt riasrt iarsrt airsrt raisrt arisrt srairt rsairt sarirt asrirt rasirt arsirt ritras irtras rtiras triras itrras tirras rirtas irrtas rritas rritas irrtas rirtas rtrias trrias rrtias rrtias trrias rtrias itrras tirras irtras ritras triras rtiras ritars irtars rtiars triars itrars tirars riatrs iratrs raitrs aritrs iartrs airtrs rtairs trairs ratirs artirs tarirs atrirs itarrs tiarrs iatrrs aitrrs tairrs atirrs rirats irrats rriats rriats irrats rirats riarts irarts rairts arirts iarrts airrts rraits rraits rarits arrits rarits arrits irarts riarts iarrts airrts rairts arirts rtrais trrais rrtais rrtais trrais rtrais rtaris traris ratris artris tarris atrris rratis rratis rartis arrtis rartis arrtis traris rtaris tarris atrris ratris artris itrars tirars irtars ritars triars rtiars itarrs tiarrs iatrrs aitrrs tairrs atirrs iratrs riatrs iartrs airtrs raitrs aritrs trairs rtairs tarirs atrirs ratirs artirs rstrai srtrai rtsrai trsrai strrai tsrrai rsrtai srrtai rrstai rrstai srrtai rsrtai rtrsai trrsai rrtsai rrtsai trrsai rtrsai strrai tsrrai srtrai rstrai trsrai rtsrai rstari srtari rtsari trsari strari tsrari rsatri sratri rastri arstri sartri asrtri rtasri trasri ratsri artsri tarsri atrsri starri tsarri satrri astrri tasrri atsrri rsrati srrati rrsati rrsati srrati rsrati rsarti srarti rasrti arsrti sarrti asrrti rrasti rrasti rarsti arrsti rarsti arrsti srarti rsarti sarrti asrrti rasrti arsrti rtrasi trrasi rrtasi rrtasi trrasi rtrasi rtarsi trarsi ratrsi artrsi tarrsi atrrsi rratsi rratsi rartsi arrtsi rartsi arrtsi trarsi rtarsi tarrsi atrrsi ratrsi artrsi strari tsrari srtari rstari trsari rtsari starri tsarri satrri astrri tasrri atsrri sratri rsatri sartri asrtri rastri arstri trasri rtasri tarsri atrsri ratsri artsri istrar sitrar itsrar tisrar stirar tsirar isrtar sirtar irstar ristar sritar rsitar itrsar tirsar irtsar ritsar trisar rtisar striar tsriar srtiar rstiar trsiar rtsiar istarr sitarr itsarr tisarr stiarr tsiarr isatrr siatrr iastrr aistrr saitrr asitrr itasrr tiasrr iatsrr aitsrr taisrr atisrr stairr tsairr satirr astirr tasirr atsirr isratr siratr irsatr risatr sriatr rsiatr isartr siartr iasrtr aisrtr sairtr asirtr irastr riastr iarstr airstr raistr aristr sraitr rsaitr saritr asritr rasitr arsitr itrasr tirasr irtasr ritasr triasr rtiasr itarsr tiarsr iatrsr aitrsr tairsr atirsr iratsr riatsr iartsr airtsr raitsr aritsr traisr rtaisr tarisr atrisr ratisr artisr strair tsrair srtair rstair trsair rtsair starir tsarir satrir astrir tasrir atsrir sratir rsatir sartir asrtir rastir arstir trasir rtasir tarsir atrsir ratsir artsir
Note: these 'words' (valid or invalid) are all the permutations of the word ristra. These words are obtained by scrambling the letters in ristra.