ouping uoping opuing pouing upoing puoing ouipng uoipng oiupng ioupng uiopng iuopng opiung poiung oipung iopung pioung ipoung upiong puiong uipong iupong piuong ipuong oupnig uopnig opunig pounig uponig puonig ounpig uonpig onupig noupig unopig nuopig opnuig ponuig onpuig nopuig pnouig npouig upnoig punoig unpoig nupoig pnuoig npuoig ouinpg uoinpg oiunpg iounpg uionpg iuonpg ounipg uonipg onuipg nouipg unoipg nuoipg oinupg ionupg oniupg noiupg inoupg nioupg uinopg iunopg uniopg nuiopg inuopg niuopg opinug poinug oipnug iopnug pionug iponug opniug poniug onpiug nopiug pnoiug npoiug oinpug ionpug onipug noipug inopug niopug pinoug ipnoug pnioug npioug inpoug nipoug upinog puinog uipnog iupnog piunog ipunog upniog puniog unpiog nupiog pnuiog npuiog uinpog iunpog unipog nuipog inupog niupog pinuog ipnuog pniuog npiuog inpuog nipuog oupign uopign opuign pouign upoign puoign ouipgn uoipgn oiupgn ioupgn uiopgn iuopgn opiugn poiugn oipugn iopugn piougn ipougn upiogn puiogn uipogn iupogn piuogn ipuogn oupgin uopgin opugin pougin upogin puogin ougpin uogpin ogupin goupin ugopin guopin opguin poguin ogpuin gopuin pgouin gpouin upgoin pugoin ugpoin gupoin pguoin gpuoin ouigpn uoigpn oiugpn iougpn uiogpn iuogpn ougipn uogipn oguipn gouipn ugoipn guoipn oigupn iogupn ogiupn goiupn igoupn gioupn uigopn iugopn ugiopn guiopn iguopn giuopn opigun poigun oipgun iopgun piogun ipogun opgiun pogiun ogpiun gopiun pgoiun gpoiun oigpun iogpun ogipun goipun igopun giopun pigoun ipgoun pgioun gpioun igpoun gipoun upigon puigon uipgon iupgon piugon ipugon upgion pugion ugpion gupion pguion gpuion uigpon iugpon ugipon guipon igupon giupon piguon ipguon pgiuon gpiuon igpuon gipuon oupngi uopngi opungi poungi upongi puongi ounpgi uonpgi onupgi noupgi unopgi nuopgi opnugi ponugi onpugi nopugi pnougi npougi upnogi punogi unpogi nupogi pnuogi npuogi oupgni uopgni opugni pougni upogni puogni ougpni uogpni ogupni goupni ugopni guopni opguni poguni ogpuni gopuni pgouni gpouni upgoni pugoni ugponi guponi pguoni gpuoni oungpi uongpi onugpi nougpi unogpi nuogpi ougnpi uognpi ogunpi gounpi ugonpi guonpi ongupi nogupi ognupi gonupi ngoupi gnoupi ungopi nugopi ugnopi gunopi nguopi gnuopi opngui pongui onpgui nopgui pnogui npogui opgnui pognui ogpnui gopnui pgonui gponui ongpui nogpui ognpui gonpui ngopui gnopui pngoui npgoui pgnoui gpnoui ngpoui gnpoui upngoi pungoi unpgoi nupgoi pnugoi npugoi upgnoi pugnoi ugpnoi gupnoi pgunoi gpunoi ungpoi nugpoi ugnpoi gunpoi ngupoi gnupoi pnguoi npguoi pgnuoi gpnuoi ngpuoi gnpuoi ouingp uoingp oiungp ioungp uiongp iuongp ounigp uonigp onuigp nouigp unoigp nuoigp oinugp ionugp oniugp noiugp inougp niougp uinogp iunogp uniogp nuiogp inuogp niuogp ouignp uoignp oiugnp iougnp uiognp iuognp ouginp uoginp oguinp gouinp ugoinp guoinp oigunp iogunp ogiunp goiunp igounp giounp uigonp iugonp ugionp guionp iguonp giuonp oungip uongip onugip nougip unogip nuogip ougnip uognip ogunip gounip ugonip guonip onguip noguip ognuip gonuip ngouip gnouip ungoip nugoip ugnoip gunoip nguoip gnuoip oingup iongup onigup noigup inogup niogup oignup iognup oginup goinup igonup gionup ongiup nogiup ogniup goniup ngoiup gnoiup ingoup nigoup ignoup ginoup ngioup gnioup uingop iungop unigop nuigop inugop niugop uignop iugnop uginop guinop igunop giunop ungiop nugiop ugniop guniop nguiop gnuiop inguop niguop ignuop ginuop ngiuop gniuop opingu poingu oipngu iopngu piongu ipongu opnigu ponigu onpigu nopigu pnoigu npoigu oinpgu ionpgu onipgu noipgu inopgu niopgu pinogu ipnogu pniogu npiogu inpogu nipogu opignu poignu oipgnu iopgnu piognu ipognu opginu poginu ogpinu gopinu pgoinu gpoinu oigpnu iogpnu ogipnu goipnu igopnu giopnu pigonu ipgonu pgionu gpionu igponu giponu opngiu pongiu onpgiu nopgiu pnogiu npogiu opgniu pogniu ogpniu gopniu pgoniu gponiu ongpiu nogpiu ognpiu gonpiu ngopiu gnopiu pngoiu npgoiu pgnoiu gpnoiu ngpoiu gnpoiu oingpu iongpu onigpu noigpu inogpu niogpu oignpu iognpu oginpu goinpu igonpu gionpu ongipu nogipu ognipu gonipu ngoipu gnoipu ingopu nigopu ignopu ginopu ngiopu gniopu pingou ipngou pnigou npigou inpgou nipgou pignou ipgnou pginou gpinou igpnou gipnou pngiou npgiou pgniou gpniou ngpiou gnpiou ingpou nigpou ignpou ginpou ngipou gnipou upingo puingo uipngo iupngo piungo ipungo upnigo punigo unpigo nupigo pnuigo npuigo uinpgo iunpgo unipgo nuipgo inupgo niupgo pinugo ipnugo pniugo npiugo inpugo nipugo upigno puigno uipgno iupgno piugno ipugno upgino pugino ugpino gupino pguino gpuino uigpno iugpno ugipno guipno igupno giupno piguno ipguno pgiuno gpiuno igpuno gipuno upngio pungio unpgio nupgio pnugio npugio upgnio pugnio ugpnio gupnio pgunio gpunio ungpio nugpio ugnpio gunpio ngupio gnupio pnguio npguio pgnuio gpnuio ngpuio gnpuio uingpo iungpo unigpo nuigpo inugpo niugpo uignpo iugnpo uginpo guinpo igunpo giunpo ungipo nugipo ugnipo gunipo nguipo gnuipo ingupo nigupo ignupo ginupo ngiupo gniupo pinguo ipnguo pniguo npiguo inpguo nipguo pignuo ipgnuo pginuo gpinuo igpnuo gipnuo pngiuo npgiuo pgniuo gpniuo ngpiuo gnpiuo ingpuo nigpuo ignpuo ginpuo ngipuo gnipuo
Note: these 'words' (valid or invalid) are all the permutations of the word ouping. These words are obtained by scrambling the letters in ouping.