robing orbing rboing broing obring boring roibng oribng riobng irobng oirbng iorbng rbiong briong ribong irbong birong ibrong obirng boirng oibrng iobrng biorng iborng robnig orbnig rbonig bronig obrnig bornig ronbig ornbig rnobig nrobig onrbig norbig rbnoig brnoig rnboig nrboig bnroig nbroig obnrig bonrig onbrig nobrig bnorig nborig roinbg orinbg rionbg ironbg oirnbg iornbg ronibg ornibg rnoibg nroibg onribg noribg rinobg irnobg rniobg nriobg inrobg nirobg oinrbg ionrbg onirbg noirbg inorbg niorbg rbinog brinog ribnog irbnog birnog ibrnog rbniog brniog rnbiog nrbiog bnriog nbriog rinbog irnbog rnibog nribog inrbog nirbog binrog ibnrog bnirog nbirog inbrog nibrog obinrg boinrg oibnrg iobnrg bionrg ibonrg obnirg bonirg onbirg nobirg bnoirg nboirg oinbrg ionbrg onibrg noibrg inobrg niobrg binorg ibnorg bniorg nbiorg inborg niborg robign orbign rboign broign obrign borign roibgn oribgn riobgn irobgn oirbgn iorbgn rbiogn briogn ribogn irbogn birogn ibrogn obirgn boirgn oibrgn iobrgn biorgn iborgn robgin orbgin rbogin brogin obrgin borgin rogbin orgbin rgobin grobin ogrbin gorbin rbgoin brgoin rgboin grboin bgroin gbroin obgrin bogrin ogbrin gobrin bgorin gborin roigbn origbn riogbn irogbn oirgbn iorgbn rogibn orgibn rgoibn groibn ogribn goribn rigobn irgobn rgiobn griobn igrobn girobn oigrbn iogrbn ogirbn goirbn igorbn giorbn rbigon brigon ribgon irbgon birgon ibrgon rbgion brgion rgbion grbion bgrion gbrion rigbon irgbon rgibon gribon igrbon girbon bigron ibgron bgiron gbiron igbron gibron obigrn boigrn oibgrn iobgrn biogrn ibogrn obgirn bogirn ogbirn gobirn bgoirn gboirn oigbrn iogbrn ogibrn goibrn igobrn giobrn bigorn ibgorn bgiorn gbiorn igborn giborn robngi orbngi rbongi brongi obrngi borngi ronbgi ornbgi rnobgi nrobgi onrbgi norbgi rbnogi brnogi rnbogi nrbogi bnrogi nbrogi obnrgi bonrgi onbrgi nobrgi bnorgi nborgi robgni orbgni rbogni brogni obrgni borgni rogbni orgbni rgobni grobni ogrbni gorbni rbgoni brgoni rgboni grboni bgroni gbroni obgrni bogrni ogbrni gobrni bgorni gborni rongbi orngbi rnogbi nrogbi onrgbi norgbi rognbi orgnbi rgonbi gronbi ogrnbi gornbi rngobi nrgobi rgnobi grnobi ngrobi gnrobi ongrbi nogrbi ognrbi gonrbi ngorbi gnorbi rbngoi brngoi rnbgoi nrbgoi bnrgoi nbrgoi rbgnoi brgnoi rgbnoi grbnoi bgrnoi gbrnoi rngboi nrgboi rgnboi grnboi ngrboi gnrboi bngroi nbgroi bgnroi gbnroi ngbroi gnbroi obngri bongri onbgri nobgri bnogri nbogri obgnri bognri ogbnri gobnri bgonri gbonri ongbri nogbri ognbri gonbri ngobri gnobri bngori nbgori bgnori gbnori ngbori gnbori roingb oringb riongb irongb oirngb iorngb ronigb ornigb rnoigb nroigb onrigb norigb rinogb irnogb rniogb nriogb inrogb nirogb oinrgb ionrgb onirgb noirgb inorgb niorgb roignb orignb riognb irognb oirgnb iorgnb roginb orginb rgoinb groinb ogrinb gorinb rigonb irgonb rgionb grionb igronb gironb oigrnb iogrnb ogirnb goirnb igornb giornb rongib orngib rnogib nrogib onrgib norgib rognib orgnib rgonib gronib ogrnib gornib rngoib nrgoib rgnoib grnoib ngroib gnroib ongrib nogrib ognrib gonrib ngorib gnorib ringob irngob rnigob nrigob inrgob nirgob rignob irgnob rginob grinob igrnob girnob rngiob nrgiob rgniob grniob ngriob gnriob ingrob nigrob ignrob ginrob ngirob gnirob oingrb iongrb onigrb noigrb inogrb niogrb oignrb iognrb oginrb goinrb igonrb gionrb ongirb nogirb ognirb gonirb ngoirb gnoirb ingorb nigorb ignorb ginorb ngiorb gniorb rbingo bringo ribngo irbngo birngo ibrngo rbnigo brnigo rnbigo nrbigo bnrigo nbrigo rinbgo irnbgo rnibgo nribgo inrbgo nirbgo binrgo ibnrgo bnirgo nbirgo inbrgo nibrgo rbigno brigno ribgno irbgno birgno ibrgno rbgino brgino rgbino grbino bgrino gbrino rigbno irgbno rgibno gribno igrbno girbno bigrno ibgrno bgirno gbirno igbrno gibrno rbngio brngio rnbgio nrbgio bnrgio nbrgio rbgnio brgnio rgbnio grbnio bgrnio gbrnio rngbio nrgbio rgnbio grnbio ngrbio gnrbio bngrio nbgrio bgnrio gbnrio ngbrio gnbrio ringbo irngbo rnigbo nrigbo inrgbo nirgbo rignbo irgnbo rginbo grinbo igrnbo girnbo rngibo nrgibo rgnibo grnibo ngribo gnribo ingrbo nigrbo ignrbo ginrbo ngirbo gnirbo bingro ibngro bnigro nbigro inbgro nibgro bignro ibgnro bginro gbinro igbnro gibnro bngiro nbgiro bgniro gbniro ngbiro gnbiro ingbro nigbro ignbro ginbro ngibro gnibro obingr boingr oibngr iobngr biongr ibongr obnigr bonigr onbigr nobigr bnoigr nboigr oinbgr ionbgr onibgr noibgr inobgr niobgr binogr ibnogr bniogr nbiogr inbogr nibogr obignr boignr oibgnr iobgnr biognr ibognr obginr boginr ogbinr gobinr bgoinr gboinr oigbnr iogbnr ogibnr goibnr igobnr giobnr bigonr ibgonr bgionr gbionr igbonr gibonr obngir bongir onbgir nobgir bnogir nbogir obgnir bognir ogbnir gobnir bgonir gbonir ongbir nogbir ognbir gonbir ngobir gnobir bngoir nbgoir bgnoir gbnoir ngboir gnboir oingbr iongbr onigbr noigbr inogbr niogbr oignbr iognbr oginbr goinbr igonbr gionbr ongibr nogibr ognibr gonibr ngoibr gnoibr ingobr nigobr ignobr ginobr ngiobr gniobr bingor ibngor bnigor nbigor inbgor nibgor bignor ibgnor bginor gbinor igbnor gibnor bngior nbgior bgnior gbnior ngbior gnbior ingbor nigbor ignbor ginbor ngibor gnibor
Note: these 'words' (valid or invalid) are all the permutations of the word robing. These words are obtained by scrambling the letters in robing.