offing fofing offing fofing ffoing ffoing ofifng foifng oiffng ioffng fiofng ifofng ofifng foifng oiffng ioffng fiofng ifofng ffiong ffiong fifong iffong fifong iffong offnig fofnig offnig fofnig ffonig ffonig ofnfig fonfig onffig noffig fnofig nfofig ofnfig fonfig onffig noffig fnofig nfofig ffnoig ffnoig fnfoig nffoig fnfoig nffoig ofinfg foinfg oifnfg iofnfg fionfg ifonfg ofnifg fonifg onfifg nofifg fnoifg nfoifg oinffg ionffg oniffg noiffg inoffg nioffg finofg ifnofg fniofg nfiofg infofg nifofg ofinfg foinfg oifnfg iofnfg fionfg ifonfg ofnifg fonifg onfifg nofifg fnoifg nfoifg oinffg ionffg oniffg noiffg inoffg nioffg finofg ifnofg fniofg nfiofg infofg nifofg ffinog ffinog fifnog iffnog fifnog iffnog ffniog ffniog fnfiog nffiog fnfiog nffiog finfog ifnfog fnifog nfifog inffog niffog finfog ifnfog fnifog nfifog inffog niffog offign fofign offign fofign ffoign ffoign ofifgn foifgn oiffgn ioffgn fiofgn ifofgn ofifgn foifgn oiffgn ioffgn fiofgn ifofgn ffiogn ffiogn fifogn iffogn fifogn iffogn offgin fofgin offgin fofgin ffogin ffogin ofgfin fogfin ogffin goffin fgofin gfofin ofgfin fogfin ogffin goffin fgofin gfofin ffgoin ffgoin fgfoin gffoin fgfoin gffoin ofigfn foigfn oifgfn iofgfn fiogfn ifogfn ofgifn fogifn ogfifn gofifn fgoifn gfoifn oigffn iogffn ogiffn goiffn igoffn gioffn figofn ifgofn fgiofn gfiofn igfofn gifofn ofigfn foigfn oifgfn iofgfn fiogfn ifogfn ofgifn fogifn ogfifn gofifn fgoifn gfoifn oigffn iogffn ogiffn goiffn igoffn gioffn figofn ifgofn fgiofn gfiofn igfofn gifofn ffigon ffigon fifgon iffgon fifgon iffgon ffgion ffgion fgfion gffion fgfion gffion figfon ifgfon fgifon gfifon igffon giffon figfon ifgfon fgifon gfifon igffon giffon offngi fofngi offngi fofngi ffongi ffongi ofnfgi fonfgi onffgi noffgi fnofgi nfofgi ofnfgi fonfgi onffgi noffgi fnofgi nfofgi ffnogi ffnogi fnfogi nffogi fnfogi nffogi offgni fofgni offgni fofgni ffogni ffogni ofgfni fogfni ogffni goffni fgofni gfofni ofgfni fogfni ogffni goffni fgofni gfofni ffgoni ffgoni fgfoni gffoni fgfoni gffoni ofngfi fongfi onfgfi nofgfi fnogfi nfogfi ofgnfi fognfi ogfnfi gofnfi fgonfi gfonfi ongffi nogffi ognffi gonffi ngoffi gnoffi fngofi nfgofi fgnofi gfnofi ngfofi gnfofi ofngfi fongfi onfgfi nofgfi fnogfi nfogfi ofgnfi fognfi ogfnfi gofnfi fgonfi gfonfi ongffi nogffi ognffi gonffi ngoffi gnoffi fngofi nfgofi fgnofi gfnofi ngfofi gnfofi ffngoi ffngoi fnfgoi nffgoi fnfgoi nffgoi ffgnoi ffgnoi fgfnoi gffnoi fgfnoi gffnoi fngfoi nfgfoi fgnfoi gfnfoi ngffoi gnffoi fngfoi nfgfoi fgnfoi gfnfoi ngffoi gnffoi ofingf foingf oifngf iofngf fiongf ifongf ofnigf fonigf onfigf nofigf fnoigf nfoigf oinfgf ionfgf onifgf noifgf inofgf niofgf finogf ifnogf fniogf nfiogf infogf nifogf ofignf foignf oifgnf iofgnf fiognf ifognf ofginf foginf ogfinf gofinf fgoinf gfoinf oigfnf iogfnf ogifnf goifnf igofnf giofnf figonf ifgonf fgionf gfionf igfonf gifonf ofngif fongif onfgif nofgif fnogif nfogif ofgnif fognif ogfnif gofnif fgonif gfonif ongfif nogfif ognfif gonfif ngofif gnofif fngoif nfgoif fgnoif gfnoif ngfoif gnfoif oingff iongff onigff noigff inogff niogff oignff iognff oginff goinff igonff gionff ongiff nogiff ogniff goniff ngoiff gnoiff ingoff nigoff ignoff ginoff ngioff gnioff fingof ifngof fnigof nfigof infgof nifgof fignof ifgnof fginof gfinof igfnof gifnof fngiof nfgiof fgniof gfniof ngfiof gnfiof ingfof nigfof ignfof ginfof ngifof gnifof ofingf foingf oifngf iofngf fiongf ifongf ofnigf fonigf onfigf nofigf fnoigf nfoigf oinfgf ionfgf onifgf noifgf inofgf niofgf finogf ifnogf fniogf nfiogf infogf nifogf ofignf foignf oifgnf iofgnf fiognf ifognf ofginf foginf ogfinf gofinf fgoinf gfoinf oigfnf iogfnf ogifnf goifnf igofnf giofnf figonf ifgonf fgionf gfionf igfonf gifonf ofngif fongif onfgif nofgif fnogif nfogif ofgnif fognif ogfnif gofnif fgonif gfonif ongfif nogfif ognfif gonfif ngofif gnofif fngoif nfgoif fgnoif gfnoif ngfoif gnfoif oingff iongff onigff noigff inogff niogff oignff iognff oginff goinff igonff gionff ongiff nogiff ogniff goniff ngoiff gnoiff ingoff nigoff ignoff ginoff ngioff gnioff fingof ifngof fnigof nfigof infgof nifgof fignof ifgnof fginof gfinof igfnof gifnof fngiof nfgiof fgniof gfniof ngfiof gnfiof ingfof nigfof ignfof ginfof ngifof gnifof ffingo ffingo fifngo iffngo fifngo iffngo ffnigo ffnigo fnfigo nffigo fnfigo nffigo finfgo ifnfgo fnifgo nfifgo inffgo niffgo finfgo ifnfgo fnifgo nfifgo inffgo niffgo ffigno ffigno fifgno iffgno fifgno iffgno ffgino ffgino fgfino gffino fgfino gffino figfno ifgfno fgifno gfifno igffno giffno figfno ifgfno fgifno gfifno igffno giffno ffngio ffngio fnfgio nffgio fnfgio nffgio ffgnio ffgnio fgfnio gffnio fgfnio gffnio fngfio nfgfio fgnfio gfnfio ngffio gnffio fngfio nfgfio fgnfio gfnfio ngffio gnffio fingfo ifngfo fnigfo nfigfo infgfo nifgfo fignfo ifgnfo fginfo gfinfo igfnfo gifnfo fngifo nfgifo fgnifo gfnifo ngfifo gnfifo ingffo nigffo ignffo ginffo ngiffo gniffo fingfo ifngfo fnigfo nfigfo infgfo nifgfo fignfo ifgnfo fginfo gfinfo igfnfo gifnfo fngifo nfgifo fgnifo gfnifo ngfifo gnfifo ingffo nigffo ignffo ginffo ngiffo gniffo
Note: these 'words' (valid or invalid) are all the permutations of the word offing. These words are obtained by scrambling the letters in offing.