spills psills siplls isplls pislls ipslls splils pslils slpils lspils plsils lpsils silpls islpls slipls lsipls ilspls lispls pilsls iplsls plisls lpisls ilpsls lipsls spills psills siplls isplls pislls ipslls splils pslils slpils lspils plsils lpsils silpls islpls slipls lsipls ilspls lispls pilsls iplsls plisls lpisls ilpsls lipsls spllis psllis slplis lsplis plslis lpslis spllis psllis slplis lsplis plslis lpslis sllpis lslpis sllpis lslpis llspis llspis pllsis lplsis pllsis lplsis llpsis llpsis sillps isllps slilps lsilps ilslps lislps sillps isllps slilps lsilps ilslps lislps sllips lslips sllips lslips llsips llsips illsps lilsps illsps lilsps llisps llisps pillss ipllss plilss lpilss ilplss liplss pillss ipllss plilss lpilss ilplss liplss plliss lpliss plliss lpliss llpiss llpiss illpss lilpss illpss lilpss llipss llipss spilsl psilsl siplsl isplsl pislsl ipslsl splisl pslisl slpisl lspisl plsisl lpsisl silpsl islpsl slipsl lsipsl ilspsl lispsl pilssl iplssl plissl lpissl ilpssl lipssl spisll psisll sipsll ispsll pissll ipssll spsill pssill sspill sspill pssill spsill sispll isspll ssipll ssipll isspll sispll pissll ipssll psisll spisll ispsll sipsll splsil pslsil slpsil lspsil plssil lpssil spslil psslil ssplil ssplil psslil spslil slspil lsspil sslpil sslpil lsspil slspil plssil lpssil pslsil splsil lspsil slpsil silspl islspl slispl lsispl ilsspl lisspl sislpl isslpl ssilpl ssilpl isslpl sislpl slsipl lssipl sslipl sslipl lssipl slsipl ilsspl lisspl islspl silspl lsispl slispl pilssl iplssl plissl lpissl ilpssl lipssl pislsl ipslsl psilsl spilsl isplsl siplsl plsisl lpsisl pslisl splisl lspisl slpisl ilspsl lispsl islpsl silpsl lsipsl slipsl spilsl psilsl siplsl isplsl pislsl ipslsl splisl pslisl slpisl lspisl plsisl lpsisl silpsl islpsl slipsl lsipsl ilspsl lispsl pilssl iplssl plissl lpissl ilpssl lipssl spisll psisll sipsll ispsll pissll ipssll spsill pssill sspill sspill pssill spsill sispll isspll ssipll ssipll isspll sispll pissll ipssll psisll spisll ispsll sipsll splsil pslsil slpsil lspsil plssil lpssil spslil psslil ssplil ssplil psslil spslil slspil lsspil sslpil sslpil lsspil slspil plssil lpssil pslsil splsil lspsil slpsil silspl islspl slispl lsispl ilsspl lisspl sislpl isslpl ssilpl ssilpl isslpl sislpl slsipl lssipl sslipl sslipl lssipl slsipl ilsspl lisspl islspl silspl lsispl slispl pilssl iplssl plissl lpissl ilpssl lipssl pislsl ipslsl psilsl spilsl isplsl siplsl plsisl lpsisl pslisl splisl lspisl slpisl ilspsl lispsl islpsl silpsl lsipsl slipsl spllsi psllsi slplsi lsplsi plslsi lpslsi spllsi psllsi slplsi lsplsi plslsi lpslsi sllpsi lslpsi sllpsi lslpsi llspsi llspsi pllssi lplssi pllssi lplssi llpssi llpssi splsli pslsli slpsli lspsli plssli lpssli spslli psslli ssplli ssplli psslli spslli slspli lsspli sslpli sslpli lsspli slspli plssli lpssli pslsli splsli lspsli slpsli splsli pslsli slpsli lspsli plssli lpssli spslli psslli ssplli ssplli psslli spslli slspli lsspli sslpli sslpli lsspli slspli plssli lpssli pslsli splsli lspsli slpsli sllspi lslspi sllspi lslspi llsspi llsspi slslpi lsslpi ssllpi ssllpi lsslpi slslpi slslpi lsslpi ssllpi ssllpi lsslpi slslpi llsspi llsspi lslspi sllspi lslspi sllspi pllssi lplssi pllssi lplssi llpssi llpssi plslsi lpslsi psllsi spllsi lsplsi slplsi plslsi lpslsi psllsi spllsi lsplsi slplsi llspsi llspsi lslpsi sllpsi lslpsi sllpsi sillsp isllsp slilsp lsilsp ilslsp lislsp sillsp isllsp slilsp lsilsp ilslsp lislsp sllisp lslisp sllisp lslisp llsisp llsisp illssp lilssp illssp lilssp llissp llissp silslp islslp slislp lsislp ilsslp lisslp sisllp issllp ssillp ssillp issllp sisllp slsilp lssilp sslilp sslilp lssilp slsilp ilsslp lisslp islslp silslp lsislp slislp silslp islslp slislp lsislp ilsslp lisslp sisllp issllp ssillp ssillp issllp sisllp slsilp lssilp sslilp sslilp lssilp slsilp ilsslp lisslp islslp silslp lsislp slislp sllsip lslsip sllsip lslsip llssip llssip slslip lsslip ssllip ssllip lsslip slslip slslip lsslip ssllip ssllip lsslip slslip llssip llssip lslsip sllsip lslsip sllsip illssp lilssp illssp lilssp llissp llissp ilslsp lislsp isllsp sillsp lsilsp slilsp ilslsp lislsp isllsp sillsp lsilsp slilsp llsisp llsisp lslisp sllisp lslisp sllisp pillss ipllss plilss lpilss ilplss liplss pillss ipllss plilss lpilss ilplss liplss plliss lpliss plliss lpliss llpiss llpiss illpss lilpss illpss lilpss llipss llipss pilsls iplsls plisls lpisls ilpsls lipsls pislls ipslls psills spills isplls siplls plsils lpsils pslils splils lspils slpils ilspls lispls islpls silpls lsipls slipls pilsls iplsls plisls lpisls ilpsls lipsls pislls ipslls psills spills isplls siplls plsils lpsils pslils splils lspils slpils ilspls lispls islpls silpls lsipls slipls pllsis lplsis pllsis lplsis llpsis llpsis plslis lpslis psllis spllis lsplis slplis plslis lpslis psllis spllis lsplis slplis llspis llspis lslpis sllpis lslpis sllpis illsps lilsps illsps lilsps llisps llisps ilslps lislps isllps sillps lsilps slilps ilslps lislps isllps sillps lsilps slilps llsips llsips lslips sllips lslips sllips
Note: these 'words' (valid or invalid) are all the permutations of the word spills. These words are obtained by scrambling the letters in spills.