sistar isstar ssitar ssitar isstar sistar sitsar istsar stisar tsisar itssar tissar sstiar sstiar stsiar tssiar stsiar tssiar istsar sitsar itssar tissar stisar tsisar sisatr issatr ssiatr ssiatr issatr sisatr siastr isastr saistr asistr iasstr aisstr ssaitr ssaitr sasitr assitr sasitr assitr isastr siastr iasstr aisstr saistr asistr sitasr istasr stiasr tsiasr itsasr tisasr siatsr isatsr saitsr asitsr iastsr aistsr staisr tsaisr satisr astisr tasisr atsisr itassr tiassr iatssr aitssr taissr atissr sstair sstair stsair tssair stsair tssair ssatir ssatir sastir asstir sastir asstir stasir tsasir satsir astsir tassir atssir stasir tsasir satsir astsir tassir atssir istasr sitasr itsasr tisasr stiasr tsiasr isatsr siatsr iastsr aistsr saitsr asitsr itassr tiassr iatssr aitssr taissr atissr staisr tsaisr satisr astisr tasisr atsisr sistra isstra ssitra ssitra isstra sistra sitsra istsra stisra tsisra itssra tissra sstira sstira stsira tssira stsira tssira istsra sitsra itssra tissra stisra tsisra sisrta issrta ssirta ssirta issrta sisrta sirsta isrsta srista rsista irssta rissta ssrita ssrita srsita rssita srsita rssita isrsta sirsta irssta rissta srista rsista sitrsa istrsa stirsa tsirsa itsrsa tisrsa sirtsa isrtsa sritsa rsitsa irstsa ristsa strisa tsrisa srtisa rstisa trsisa rtsisa itrssa tirssa irtssa ritssa trissa rtissa sstria sstria stsria tssria stsria tssria ssrtia ssrtia srstia rsstia srstia rsstia strsia tsrsia srtsia rstsia trssia rtssia strsia tsrsia srtsia rstsia trssia rtssia istrsa sitrsa itsrsa tisrsa stirsa tsirsa isrtsa sirtsa irstsa ristsa sritsa rsitsa itrssa tirssa irtssa ritssa trissa rtissa strisa tsrisa srtisa rstisa trsisa rtsisa sisart issart ssiart ssiart issart sisart siasrt isasrt saisrt asisrt iassrt aissrt ssairt ssairt sasirt assirt sasirt assirt isasrt siasrt iassrt aissrt saisrt asisrt sisrat issrat ssirat ssirat issrat sisrat sirsat isrsat srisat rsisat irssat rissat ssriat ssriat srsiat rssiat srsiat rssiat isrsat sirsat irssat rissat srisat rsisat siarst isarst sairst asirst iasrst aisrst sirast israst sriast rsiast irsast risast sarist asrist sraist rsaist arsist rasist iarsst airsst irasst riasst arisst raisst ssarit ssarit sasrit assrit sasrit assrit ssrait ssrait srsait rssait srsait rssait sarsit asrsit srasit rsasit arssit rassit sarsit asrsit srasit rsasit arssit rassit isarst siarst iasrst aisrst sairst asirst israst sirast irsast risast sriast rsiast iarsst airsst irasst riasst arisst raisst sarist asrist sraist rsaist arsist rasist sitars istars stiars tsiars itsars tisars siatrs isatrs saitrs asitrs iastrs aistrs stairs tsairs satirs astirs tasirs atsirs itasrs tiasrs iatsrs aitsrs taisrs atisrs sitras istras stiras tsiras itsras tisras sirtas isrtas sritas rsitas irstas ristas strias tsrias srtias rstias trsias rtsias itrsas tirsas irtsas ritsas trisas rtisas siarts isarts sairts asirts iasrts aisrts sirats israts sriats rsiats irsats risats sarits asrits sraits rsaits arsits rasits iarsts airsts irasts riasts arists raists staris tsaris satris astris tasris atsris strais tsrais srtais rstais trsais rtsais sartis asrtis sratis rsatis arstis rastis tarsis atrsis trasis rtasis artsis ratsis itarss tiarss iatrss aitrss tairss atirss itrass tirass irtass ritass triass rtiass iartss airtss iratss riatss aritss raitss tariss atriss traiss rtaiss artiss ratiss sstari sstari stsari tssari stsari tssari ssatri ssatri sastri asstri sastri asstri stasri tsasri satsri astsri tassri atssri stasri tsasri satsri astsri tassri atssri sstrai sstrai stsrai tssrai stsrai tssrai ssrtai ssrtai srstai rsstai srstai rsstai strsai tsrsai srtsai rstsai trssai rtssai strsai tsrsai srtsai rstsai trssai rtssai ssarti ssarti sasrti assrti sasrti assrti ssrati ssrati srsati rssati srsati rssati sarsti asrsti srasti rsasti arssti rassti sarsti asrsti srasti rsasti arssti rassti starsi tsarsi satrsi astrsi tasrsi atsrsi strasi tsrasi srtasi rstasi trsasi rtsasi sartsi asrtsi sratsi rsatsi arstsi rastsi tarssi atrssi trassi rtassi artssi ratssi starsi tsarsi satrsi astrsi tasrsi atsrsi strasi tsrasi srtasi rstasi trsasi rtsasi sartsi asrtsi sratsi rsatsi arstsi rastsi tarssi atrssi trassi rtassi artssi ratssi istars sitars itsars tisars stiars tsiars isatrs siatrs iastrs aistrs saitrs asitrs itasrs tiasrs iatsrs aitsrs taisrs atisrs stairs tsairs satirs astirs tasirs atsirs istras sitras itsras tisras stiras tsiras isrtas sirtas irstas ristas sritas rsitas itrsas tirsas irtsas ritsas trisas rtisas strias tsrias srtias rstias trsias rtsias isarts siarts iasrts aisrts sairts asirts israts sirats irsats risats sriats rsiats iarsts airsts irasts riasts arists raists sarits asrits sraits rsaits arsits rasits itarss tiarss iatrss aitrss tairss atirss itrass tirass irtass ritass triass rtiass iartss airtss iratss riatss aritss raitss tariss atriss traiss rtaiss artiss ratiss staris tsaris satris astris tasris atsris strais tsrais srtais rstais trsais rtsais sartis asrtis sratis rsatis arstis rastis tarsis atrsis trasis rtasis artsis ratsis
Note: these 'words' (valid or invalid) are all the permutations of the word sistar. These words are obtained by scrambling the letters in sistar.