spaing psaing saping asping pasing apsing spiang psiang sipang ispang pisang ipsang saipng asipng siapng isapng aispng iaspng paisng apisng piasng ipasng aipsng iapsng spanig psanig sapnig aspnig pasnig apsnig spnaig psnaig snpaig nspaig pnsaig npsaig sanpig asnpig snapig nsapig anspig naspig pansig apnsig pnasig npasig anpsig napsig spinag psinag sipnag ispnag pisnag ipsnag spniag psniag snpiag nspiag pnsiag npsiag sinpag isnpag snipag nsipag inspag nispag pinsag ipnsag pnisag npisag inpsag nipsag sainpg asinpg sianpg isanpg aisnpg iasnpg sanipg asnipg snaipg nsaipg ansipg nasipg sinapg isnapg sniapg nsiapg insapg nisapg ainspg ianspg anispg naispg inaspg niaspg painsg apinsg piansg ipansg aipnsg iapnsg panisg apnisg pnaisg npaisg anpisg napisg pinasg ipnasg pniasg npiasg inpasg nipasg ainpsg ianpsg anipsg naipsg inapsg niapsg spaign psaign sapign aspign pasign apsign spiagn psiagn sipagn ispagn pisagn ipsagn saipgn asipgn siapgn isapgn aispgn iaspgn paisgn apisgn piasgn ipasgn aipsgn iapsgn spagin psagin sapgin aspgin pasgin apsgin spgain psgain sgpain gspain pgsain gpsain sagpin asgpin sgapin gsapin agspin gaspin pagsin apgsin pgasin gpasin agpsin gapsin spigan psigan sipgan ispgan pisgan ipsgan spgian psgian sgpian gspian pgsian gpsian sigpan isgpan sgipan gsipan igspan gispan pigsan ipgsan pgisan gpisan igpsan gipsan saigpn asigpn siagpn isagpn aisgpn iasgpn sagipn asgipn sgaipn gsaipn agsipn gasipn sigapn isgapn sgiapn gsiapn igsapn gisapn aigspn iagspn agispn gaispn igaspn giaspn paigsn apigsn piagsn ipagsn aipgsn iapgsn pagisn apgisn pgaisn gpaisn agpisn gapisn pigasn ipgasn pgiasn gpiasn igpasn gipasn aigpsn iagpsn agipsn gaipsn igapsn giapsn spangi psangi sapngi aspngi pasngi apsngi spnagi psnagi snpagi nspagi pnsagi npsagi sanpgi asnpgi snapgi nsapgi anspgi naspgi pansgi apnsgi pnasgi npasgi anpsgi napsgi spagni psagni sapgni aspgni pasgni apsgni spgani psgani sgpani gspani pgsani gpsani sagpni asgpni sgapni gsapni agspni gaspni pagsni apgsni pgasni gpasni agpsni gapsni spngai psngai snpgai nspgai pnsgai npsgai spgnai psgnai sgpnai gspnai pgsnai gpsnai sngpai nsgpai sgnpai gsnpai ngspai gnspai pngsai npgsai pgnsai gpnsai ngpsai gnpsai sangpi asngpi snagpi nsagpi ansgpi nasgpi sagnpi asgnpi sganpi gsanpi agsnpi gasnpi sngapi nsgapi sgnapi gsnapi ngsapi gnsapi angspi nagspi agnspi ganspi ngaspi gnaspi pangsi apngsi pnagsi npagsi anpgsi napgsi pagnsi apgnsi pgansi gpansi agpnsi gapnsi pngasi npgasi pgnasi gpnasi ngpasi gnpasi angpsi nagpsi agnpsi ganpsi ngapsi gnapsi spinga psinga sipnga ispnga pisnga ipsnga spniga psniga snpiga nspiga pnsiga npsiga sinpga isnpga snipga nsipga inspga nispga pinsga ipnsga pnisga npisga inpsga nipsga spigna psigna sipgna ispgna pisgna ipsgna spgina psgina sgpina gspina pgsina gpsina sigpna isgpna sgipna gsipna igspna gispna pigsna ipgsna pgisna gpisna igpsna gipsna spngia psngia snpgia nspgia pnsgia npsgia spgnia psgnia sgpnia gspnia pgsnia gpsnia sngpia nsgpia sgnpia gsnpia ngspia gnspia pngsia npgsia pgnsia gpnsia ngpsia gnpsia singpa isngpa snigpa nsigpa insgpa nisgpa signpa isgnpa sginpa gsinpa igsnpa gisnpa sngipa nsgipa sgnipa gsnipa ngsipa gnsipa ingspa nigspa ignspa ginspa ngispa gnispa pingsa ipngsa pnigsa npigsa inpgsa nipgsa pignsa ipgnsa pginsa gpinsa igpnsa gipnsa pngisa npgisa pgnisa gpnisa ngpisa gnpisa ingpsa nigpsa ignpsa ginpsa ngipsa gnipsa saingp asingp siangp isangp aisngp iasngp sanigp asnigp snaigp nsaigp ansigp nasigp sinagp isnagp sniagp nsiagp insagp nisagp ainsgp iansgp anisgp naisgp inasgp niasgp saignp asignp siagnp isagnp aisgnp iasgnp saginp asginp sgainp gsainp agsinp gasinp siganp isganp sgianp gsianp igsanp gisanp aigsnp iagsnp agisnp gaisnp igasnp giasnp sangip asngip snagip nsagip ansgip nasgip sagnip asgnip sganip gsanip agsnip gasnip sngaip nsgaip sgnaip gsnaip ngsaip gnsaip angsip nagsip agnsip gansip ngasip gnasip singap isngap snigap nsigap insgap nisgap signap isgnap sginap gsinap igsnap gisnap sngiap nsgiap sgniap gsniap ngsiap gnsiap ingsap nigsap ignsap ginsap ngisap gnisap aingsp iangsp anigsp naigsp inagsp niagsp aignsp iagnsp aginsp gainsp igansp giansp angisp nagisp agnisp ganisp ngaisp gnaisp ingasp nigasp ignasp ginasp ngiasp gniasp paings apings piangs ipangs aipngs iapngs panigs apnigs pnaigs npaigs anpigs napigs pinags ipnags pniags npiags inpags nipags ainpgs ianpgs anipgs naipgs inapgs niapgs paigns apigns piagns ipagns aipgns iapgns pagins apgins pgains gpains agpins gapins pigans ipgans pgians gpians igpans gipans aigpns iagpns agipns gaipns igapns giapns pangis apngis pnagis npagis anpgis napgis pagnis apgnis pganis gpanis agpnis gapnis pngais npgais pgnais gpnais ngpais gnpais angpis nagpis agnpis ganpis ngapis gnapis pingas ipngas pnigas npigas inpgas nipgas pignas ipgnas pginas gpinas igpnas gipnas pngias npgias pgnias gpnias ngpias gnpias ingpas nigpas ignpas ginpas ngipas gnipas aingps iangps anigps naigps inagps niagps aignps iagnps aginps gainps iganps gianps angips nagips agnips ganips ngaips gnaips ingaps nigaps ignaps ginaps ngiaps gniaps
Note: these 'words' (valid or invalid) are all the permutations of the word spaing. These words are obtained by scrambling the letters in spaing.