sparse psarse saprse asprse pasrse apsrse sprase psrase srpase rspase prsase rpsase sarpse asrpse srapse rsapse arspse raspse parsse aprsse prasse rpasse arpsse rapsse spasre psasre sapsre aspsre passre apssre spsare pssare sspare sspare pssare spsare saspre asspre ssapre ssapre asspre saspre passre apssre psasre spasre aspsre sapsre sprsae psrsae srpsae rspsae prssae rpssae spsrae pssrae ssprae ssprae pssrae spsrae srspae rsspae ssrpae ssrpae rsspae srspae prssae rpssae psrsae sprsae rspsae srpsae sarspe asrspe sraspe rsaspe arsspe rasspe sasrpe assrpe ssarpe ssarpe assrpe sasrpe srsape rssape ssrape ssrape rssape srsape arsspe rasspe asrspe sarspe rsaspe sraspe parsse aprsse prasse rpasse arpsse rapsse pasrse apsrse psarse sparse asprse saprse prsase rpsase psrase sprase rspase srpase arspse raspse asrpse sarpse rsapse srapse spares psares sapres aspres pasres apsres spraes psraes srpaes rspaes prsaes rpsaes sarpes asrpes srapes rsapes arspes raspes parses aprses prases rpases arpses rapses spaers psaers sapers aspers pasers apsers spears psears separs espars pesars epsars saeprs aseprs seaprs esaprs aesprs easprs paesrs apesrs peasrs epasrs aepsrs eapsrs spreas psreas srpeas rspeas prseas rpseas speras pseras sepras espras pesras epsras srepas rsepas serpas esrpas respas erspas presas rpesas persas eprsas repsas erpsas sareps asreps sraeps rsaeps arseps raseps saerps aserps searps esarps aesrps easrps sreaps rseaps seraps esraps resaps ersaps aresps raesps aersps earsps reasps erasps paress apress praess rpaess arpess rapess paerss aperss pearss eparss aeprss eaprss preass rpeass perass eprass repass erpass arepss raepss aerpss earpss reapss erapss spaser psaser sapser aspser passer apsser spsaer pssaer sspaer sspaer pssaer spsaer sasper assper ssaper ssaper assper sasper passer apsser psaser spaser aspser sapser spaesr psaesr sapesr aspesr pasesr apsesr speasr pseasr sepasr espasr pesasr epsasr saepsr asepsr seapsr esapsr aespsr easpsr paessr apessr peassr epassr aepssr eapssr spsear pssear sspear sspear pssear spsear spesar psesar sepsar espsar pessar epssar ssepar ssepar sespar esspar sespar esspar psesar spesar pessar epssar sepsar espsar sasepr assepr ssaepr ssaepr assepr sasepr saespr asespr seaspr esaspr aesspr easspr sseapr sseapr sesapr essapr sesapr essapr asespr saespr aesspr easspr seaspr esaspr pasesr apsesr psaesr spaesr aspesr sapesr paessr apessr peassr epassr aepssr eapssr pseasr speasr pesasr epsasr sepasr espasr asepsr saepsr aespsr easpsr seapsr esapsr sprsea psrsea srpsea rspsea prssea rpssea spsrea pssrea ssprea ssprea pssrea spsrea srspea rsspea ssrpea ssrpea rsspea srspea prssea rpssea psrsea sprsea rspsea srpsea spresa psresa srpesa rspesa prsesa rpsesa spersa psersa seprsa esprsa pesrsa epsrsa srepsa rsepsa serpsa esrpsa respsa erspsa pressa rpessa perssa eprssa repssa erpssa spsera pssera sspera sspera pssera spsera spesra psesra sepsra espsra pessra epssra ssepra ssepra sespra esspra sespra esspra psesra spesra pessra epssra sepsra espsra srsepa rssepa ssrepa ssrepa rssepa srsepa srespa rsespa serspa esrspa resspa ersspa sserpa sserpa sesrpa essrpa sesrpa essrpa rsespa srespa resspa ersspa serspa esrspa prsesa rpsesa psresa spresa rspesa srpesa pressa rpessa perssa eprssa repssa erpssa psersa spersa pesrsa epsrsa seprsa esprsa rsepsa srepsa respsa erspsa serpsa esrpsa sarsep asrsep srasep rsasep arssep rassep sasrep assrep ssarep ssarep assrep sasrep srsaep rssaep ssraep ssraep rssaep srsaep arssep rassep asrsep sarsep rsasep srasep saresp asresp sraesp rsaesp arsesp rasesp saersp asersp searsp esarsp aesrsp easrsp sreasp rseasp serasp esrasp resasp ersasp aressp raessp aerssp earssp reassp erassp saserp asserp ssaerp ssaerp asserp saserp saesrp asesrp seasrp esasrp aessrp eassrp ssearp ssearp sesarp essarp sesarp essarp asesrp saesrp aessrp eassrp seasrp esasrp srseap rsseap ssreap ssreap rsseap srseap sresap rsesap sersap esrsap ressap erssap sserap sserap sesrap essrap sesrap essrap rsesap sresap ressap erssap sersap esrsap arsesp rasesp asresp saresp rsaesp sraesp aressp raessp aerssp earssp reassp erassp asersp saersp aesrsp easrsp searsp esarsp rseasp sreasp resasp ersasp serasp esrasp parses aprses prases rpases arpses rapses pasres apsres psares spares aspres sapres prsaes rpsaes psraes spraes rspaes srpaes arspes raspes asrpes sarpes rsapes srapes paress apress praess rpaess arpess rapess paerss aperss pearss eparss aeprss eaprss preass rpeass perass eprass repass erpass arepss raepss aerpss earpss reapss erapss pasers apsers psaers spaers aspers sapers paesrs apesrs peasrs epasrs aepsrs eapsrs psears spears pesars epsars separs espars aseprs saeprs aesprs easprs seaprs esaprs prseas rpseas psreas spreas rspeas srpeas presas rpesas persas eprsas repsas erpsas pseras speras pesras epsras sepras espras rsepas srepas respas erspas serpas esrpas arseps raseps asreps sareps rsaeps sraeps aresps raesps aersps earsps reasps erasps aserps saerps aesrps easrps searps esarps rseaps sreaps resaps ersaps seraps esraps
Note: these 'words' (valid or invalid) are all the permutations of the word sparse. These words are obtained by scrambling the letters in sparse.