spains psains sapins aspins pasins apsins spians psians sipans ispans pisans ipsans saipns asipns siapns isapns aispns iaspns paisns apisns piasns ipasns aipsns iapsns spanis psanis sapnis aspnis pasnis apsnis spnais psnais snpais nspais pnsais npsais sanpis asnpis snapis nsapis anspis naspis pansis apnsis pnasis npasis anpsis napsis spinas psinas sipnas ispnas pisnas ipsnas spnias psnias snpias nspias pnsias npsias sinpas isnpas snipas nsipas inspas nispas pinsas ipnsas pnisas npisas inpsas nipsas sainps asinps sianps isanps aisnps iasnps sanips asnips snaips nsaips ansips nasips sinaps isnaps sniaps nsiaps insaps nisaps ainsps iansps anisps naisps inasps niasps painss apinss pianss ipanss aipnss iapnss paniss apniss pnaiss npaiss anpiss napiss pinass ipnass pniass npiass inpass nipass ainpss ianpss anipss naipss inapss niapss spaisn psaisn sapisn aspisn pasisn apsisn spiasn psiasn sipasn ispasn pisasn ipsasn saipsn asipsn siapsn isapsn aispsn iaspsn paissn apissn piassn ipassn aipssn iapssn spasin psasin sapsin aspsin passin apssin spsain pssain sspain sspain pssain spsain saspin asspin ssapin ssapin asspin saspin passin apssin psasin spasin aspsin sapsin spisan psisan sipsan ispsan pissan ipssan spsian pssian sspian sspian pssian spsian sispan isspan ssipan ssipan isspan sispan pissan ipssan psisan spisan ispsan sipsan saispn asispn siaspn isaspn aisspn iasspn sasipn assipn ssaipn ssaipn assipn sasipn sisapn issapn ssiapn ssiapn issapn sisapn aisspn iasspn asispn saispn isaspn siaspn paissn apissn piassn ipassn aipssn iapssn pasisn apsisn psaisn spaisn aspisn sapisn pisasn ipsasn psiasn spiasn ispasn sipasn aispsn iaspsn asipsn saipsn isapsn siapsn spansi psansi sapnsi aspnsi pasnsi apsnsi spnasi psnasi snpasi nspasi pnsasi npsasi sanpsi asnpsi snapsi nsapsi anspsi naspsi panssi apnssi pnassi npassi anpssi napssi spasni psasni sapsni aspsni passni apssni spsani pssani sspani sspani pssani spsani saspni asspni ssapni ssapni asspni saspni passni apssni psasni spasni aspsni sapsni spnsai psnsai snpsai nspsai pnssai npssai spsnai pssnai sspnai sspnai pssnai spsnai snspai nsspai ssnpai ssnpai nsspai snspai pnssai npssai psnsai spnsai nspsai snpsai sanspi asnspi snaspi nsaspi ansspi nasspi sasnpi assnpi ssanpi ssanpi assnpi sasnpi snsapi nssapi ssnapi ssnapi nssapi snsapi ansspi nasspi asnspi sanspi nsaspi snaspi panssi apnssi pnassi npassi anpssi napssi pasnsi apsnsi psansi spansi aspnsi sapnsi pnsasi npsasi psnasi spnasi nspasi snpasi anspsi naspsi asnpsi sanpsi nsapsi snapsi spinsa psinsa sipnsa ispnsa pisnsa ipsnsa spnisa psnisa snpisa nspisa pnsisa npsisa sinpsa isnpsa snipsa nsipsa inspsa nispsa pinssa ipnssa pnissa npissa inpssa nipssa spisna psisna sipsna ispsna pissna ipssna spsina pssina sspina sspina pssina spsina sispna isspna ssipna ssipna isspna sispna pissna ipssna psisna spisna ispsna sipsna spnsia psnsia snpsia nspsia pnssia npssia spsnia pssnia sspnia sspnia pssnia spsnia snspia nsspia ssnpia ssnpia nsspia snspia pnssia npssia psnsia spnsia nspsia snpsia sinspa isnspa snispa nsispa insspa nisspa sisnpa issnpa ssinpa ssinpa issnpa sisnpa snsipa nssipa ssnipa ssnipa nssipa snsipa insspa nisspa isnspa sinspa nsispa snispa pinssa ipnssa pnissa npissa inpssa nipssa pisnsa ipsnsa psinsa spinsa ispnsa sipnsa pnsisa npsisa psnisa spnisa nspisa snpisa inspsa nispsa isnpsa sinpsa nsipsa snipsa sainsp asinsp siansp isansp aisnsp iasnsp sanisp asnisp snaisp nsaisp ansisp nasisp sinasp isnasp sniasp nsiasp insasp nisasp ainssp ianssp anissp naissp inassp niassp saisnp asisnp siasnp isasnp aissnp iassnp sasinp assinp ssainp ssainp assinp sasinp sisanp issanp ssianp ssianp issanp sisanp aissnp iassnp asisnp saisnp isasnp siasnp sansip asnsip snasip nsasip anssip nassip sasnip assnip ssanip ssanip assnip sasnip snsaip nssaip ssnaip ssnaip nssaip snsaip anssip nassip asnsip sansip nsasip snasip sinsap isnsap snisap nsisap inssap nissap sisnap issnap ssinap ssinap issnap sisnap snsiap nssiap ssniap ssniap nssiap snsiap inssap nissap isnsap sinsap nsisap snisap ainssp ianssp anissp naissp inassp niassp aisnsp iasnsp asinsp sainsp isansp siansp ansisp nasisp asnisp sanisp nsaisp snaisp insasp nisasp isnasp sinasp nsiasp sniasp painss apinss pianss ipanss aipnss iapnss paniss apniss pnaiss npaiss anpiss napiss pinass ipnass pniass npiass inpass nipass ainpss ianpss anipss naipss inapss niapss paisns apisns piasns ipasns aipsns iapsns pasins apsins psains spains aspins sapins pisans ipsans psians spians ispans sipans aispns iaspns asipns saipns isapns siapns pansis apnsis pnasis npasis anpsis napsis pasnis apsnis psanis spanis aspnis sapnis pnsais npsais psnais spnais nspais snpais anspis naspis asnpis sanpis nsapis snapis pinsas ipnsas pnisas npisas inpsas nipsas pisnas ipsnas psinas spinas ispnas sipnas pnsias npsias psnias spnias nspias snpias inspas nispas isnpas sinpas nsipas snipas ainsps iansps anisps naisps inasps niasps aisnps iasnps asinps sainps isanps sianps ansips nasips asnips sanips nsaips snaips insaps nisaps isnaps sinaps nsiaps sniaps
Note: these 'words' (valid or invalid) are all the permutations of the word spains. These words are obtained by scrambling the letters in spains.