spails psails sapils aspils pasils apsils spials psials sipals ispals pisals ipsals saipls asipls siapls isapls aispls iaspls paisls apisls piasls ipasls aipsls iapsls spalis psalis saplis asplis paslis apslis splais pslais slpais lspais plsais lpsais salpis aslpis slapis lsapis alspis laspis palsis aplsis plasis lpasis alpsis lapsis spilas psilas siplas isplas pislas ipslas splias pslias slpias lspias plsias lpsias silpas islpas slipas lsipas ilspas lispas pilsas iplsas plisas lpisas ilpsas lipsas sailps asilps sialps isalps aislps iaslps salips aslips slaips lsaips alsips lasips silaps islaps sliaps lsiaps ilsaps lisaps ailsps ialsps alisps laisps ilasps liasps pailss apilss pialss ipalss aiplss iaplss paliss apliss plaiss lpaiss alpiss lapiss pilass iplass pliass lpiass ilpass lipass ailpss ialpss alipss laipss ilapss liapss spaisl psaisl sapisl aspisl pasisl apsisl spiasl psiasl sipasl ispasl pisasl ipsasl saipsl asipsl siapsl isapsl aispsl iaspsl paissl apissl piassl ipassl aipssl iapssl spasil psasil sapsil aspsil passil apssil spsail pssail sspail sspail pssail spsail saspil asspil ssapil ssapil asspil saspil passil apssil psasil spasil aspsil sapsil spisal psisal sipsal ispsal pissal ipssal spsial pssial sspial sspial pssial spsial sispal isspal ssipal ssipal isspal sispal pissal ipssal psisal spisal ispsal sipsal saispl asispl siaspl isaspl aisspl iasspl sasipl assipl ssaipl ssaipl assipl sasipl sisapl issapl ssiapl ssiapl issapl sisapl aisspl iasspl asispl saispl isaspl siaspl paissl apissl piassl ipassl aipssl iapssl pasisl apsisl psaisl spaisl aspisl sapisl pisasl ipsasl psiasl spiasl ispasl sipasl aispsl iaspsl asipsl saipsl isapsl siapsl spalsi psalsi saplsi asplsi paslsi apslsi splasi pslasi slpasi lspasi plsasi lpsasi salpsi aslpsi slapsi lsapsi alspsi laspsi palssi aplssi plassi lpassi alpssi lapssi spasli psasli sapsli aspsli passli apssli spsali pssali sspali sspali pssali spsali saspli asspli ssapli ssapli asspli saspli passli apssli psasli spasli aspsli sapsli splsai pslsai slpsai lspsai plssai lpssai spslai psslai ssplai ssplai psslai spslai slspai lsspai sslpai sslpai lsspai slspai plssai lpssai pslsai splsai lspsai slpsai salspi aslspi slaspi lsaspi alsspi lasspi saslpi asslpi ssalpi ssalpi asslpi saslpi slsapi lssapi sslapi sslapi lssapi slsapi alsspi lasspi aslspi salspi lsaspi slaspi palssi aplssi plassi lpassi alpssi lapssi paslsi apslsi psalsi spalsi asplsi saplsi plsasi lpsasi pslasi splasi lspasi slpasi alspsi laspsi aslpsi salpsi lsapsi slapsi spilsa psilsa siplsa isplsa pislsa ipslsa splisa pslisa slpisa lspisa plsisa lpsisa silpsa islpsa slipsa lsipsa ilspsa lispsa pilssa iplssa plissa lpissa ilpssa lipssa spisla psisla sipsla ispsla pissla ipssla spsila pssila sspila sspila pssila spsila sispla isspla ssipla ssipla isspla sispla pissla ipssla psisla spisla ispsla sipsla splsia pslsia slpsia lspsia plssia lpssia spslia psslia ssplia ssplia psslia spslia slspia lsspia sslpia sslpia lsspia slspia plssia lpssia pslsia splsia lspsia slpsia silspa islspa slispa lsispa ilsspa lisspa sislpa isslpa ssilpa ssilpa isslpa sislpa slsipa lssipa sslipa sslipa lssipa slsipa ilsspa lisspa islspa silspa lsispa slispa pilssa iplssa plissa lpissa ilpssa lipssa pislsa ipslsa psilsa spilsa isplsa siplsa plsisa lpsisa pslisa splisa lspisa slpisa ilspsa lispsa islpsa silpsa lsipsa slipsa sailsp asilsp sialsp isalsp aislsp iaslsp salisp aslisp slaisp lsaisp alsisp lasisp silasp islasp sliasp lsiasp ilsasp lisasp ailssp ialssp alissp laissp ilassp liassp saislp asislp siaslp isaslp aisslp iasslp sasilp assilp ssailp ssailp assilp sasilp sisalp issalp ssialp ssialp issalp sisalp aisslp iasslp asislp saislp isaslp siaslp salsip aslsip slasip lsasip alssip lassip saslip asslip ssalip ssalip asslip saslip slsaip lssaip sslaip sslaip lssaip slsaip alssip lassip aslsip salsip lsasip slasip silsap islsap slisap lsisap ilssap lissap sislap isslap ssilap ssilap isslap sislap slsiap lssiap ssliap ssliap lssiap slsiap ilssap lissap islsap silsap lsisap slisap ailssp ialssp alissp laissp ilassp liassp aislsp iaslsp asilsp sailsp isalsp sialsp alsisp lasisp aslisp salisp lsaisp slaisp ilsasp lisasp islasp silasp lsiasp sliasp pailss apilss pialss ipalss aiplss iaplss paliss apliss plaiss lpaiss alpiss lapiss pilass iplass pliass lpiass ilpass lipass ailpss ialpss alipss laipss ilapss liapss paisls apisls piasls ipasls aipsls iapsls pasils apsils psails spails aspils sapils pisals ipsals psials spials ispals sipals aispls iaspls asipls saipls isapls siapls palsis aplsis plasis lpasis alpsis lapsis paslis apslis psalis spalis asplis saplis plsais lpsais pslais splais lspais slpais alspis laspis aslpis salpis lsapis slapis pilsas iplsas plisas lpisas ilpsas lipsas pislas ipslas psilas spilas isplas siplas plsias lpsias pslias splias lspias slpias ilspas lispas islpas silpas lsipas slipas ailsps ialsps alisps laisps ilasps liasps aislps iaslps asilps sailps isalps sialps alsips lasips aslips salips lsaips slaips ilsaps lisaps islaps silaps lsiaps sliaps
Note: these 'words' (valid or invalid) are all the permutations of the word spails. These words are obtained by scrambling the letters in spails.