nipped inpped npiped pniped ipnped pinped nipped inpped npiped pniped ipnped pinped nppied pnpied nppied pnpied ppnied ppnied ippned pipned ippned pipned ppined ppined nipepd inpepd npiepd pniepd ipnepd pinepd nieppd ineppd neippd enippd ienppd einppd npeipd pneipd nepipd enpipd penipd epnipd ipenpd pienpd iepnpd eipnpd peinpd epinpd nipepd inpepd npiepd pniepd ipnepd pinepd nieppd ineppd neippd enippd ienppd einppd npeipd pneipd nepipd enpipd penipd epnipd ipenpd pienpd iepnpd eipnpd peinpd epinpd nppeid pnpeid nppeid pnpeid ppneid ppneid npepid pnepid neppid enppid penpid epnpid npepid pnepid neppid enppid penpid epnpid ppenid ppenid pepnid eppnid pepnid eppnid ippend pipend ippend pipend ppiend ppiend ipepnd piepnd ieppnd eippnd peipnd epipnd ipepnd piepnd ieppnd eippnd peipnd epipnd ppeind ppeind pepind eppind pepind eppind nippde inppde npipde pnipde ipnpde pinpde nippde inppde npipde pnipde ipnpde pinpde nppide pnpide nppide pnpide ppnide ppnide ippnde pipnde ippnde pipnde ppinde ppinde nipdpe inpdpe npidpe pnidpe ipndpe pindpe nidppe indppe ndippe dnippe idnppe dinppe npdipe pndipe ndpipe dnpipe pdnipe dpnipe ipdnpe pidnpe idpnpe dipnpe pdinpe dpinpe nipdpe inpdpe npidpe pnidpe ipndpe pindpe nidppe indppe ndippe dnippe idnppe dinppe npdipe pndipe ndpipe dnpipe pdnipe dpnipe ipdnpe pidnpe idpnpe dipnpe pdinpe dpinpe nppdie pnpdie nppdie pnpdie ppndie ppndie npdpie pndpie ndppie dnppie pdnpie dpnpie npdpie pndpie ndppie dnppie pdnpie dpnpie ppdnie ppdnie pdpnie dppnie pdpnie dppnie ippdne pipdne ippdne pipdne ppidne ppidne ipdpne pidpne idppne dippne pdipne dpipne ipdpne pidpne idppne dippne pdipne dpipne ppdine ppdine pdpine dppine pdpine dppine nipedp inpedp npiedp pniedp ipnedp pinedp niepdp inepdp neipdp enipdp ienpdp einpdp npeidp pneidp nepidp enpidp penidp epnidp ipendp piendp iepndp eipndp peindp epindp nipdep inpdep npidep pnidep ipndep pindep nidpep indpep ndipep dnipep idnpep dinpep npdiep pndiep ndpiep dnpiep pdniep dpniep ipdnep pidnep idpnep dipnep pdinep dpinep niedpp inedpp neidpp enidpp iendpp eindpp nidepp indepp ndiepp dniepp idnepp dinepp nedipp endipp ndeipp dneipp ednipp denipp iednpp eidnpp idenpp dienpp edinpp deinpp npedip pnedip nepdip enpdip pendip epndip npdeip pndeip ndpeip dnpeip pdneip dpneip nedpip endpip ndepip dnepip ednpip denpip pednip epdnip pdenip dpenip edpnip depnip ipednp piednp iepdnp eipdnp peidnp epidnp ipdenp pidenp idpenp dipenp pdienp dpienp iedpnp eidpnp idepnp diepnp edipnp deipnp pedinp epdinp pdeinp dpeinp edpinp depinp nipedp inpedp npiedp pniedp ipnedp pinedp niepdp inepdp neipdp enipdp ienpdp einpdp npeidp pneidp nepidp enpidp penidp epnidp ipendp piendp iepndp eipndp peindp epindp nipdep inpdep npidep pnidep ipndep pindep nidpep indpep ndipep dnipep idnpep dinpep npdiep pndiep ndpiep dnpiep pdniep dpniep ipdnep pidnep idpnep dipnep pdinep dpinep niedpp inedpp neidpp enidpp iendpp eindpp nidepp indepp ndiepp dniepp idnepp dinepp nedipp endipp ndeipp dneipp ednipp denipp iednpp eidnpp idenpp dienpp edinpp deinpp npedip pnedip nepdip enpdip pendip epndip npdeip pndeip ndpeip dnpeip pdneip dpneip nedpip endpip ndepip dnepip ednpip denpip pednip epdnip pdenip dpenip edpnip depnip ipednp piednp iepdnp eipdnp peidnp epidnp ipdenp pidenp idpenp dipenp pdienp dpienp iedpnp eidpnp idepnp diepnp edipnp deipnp pedinp epdinp pdeinp dpeinp edpinp depinp nppedi pnpedi nppedi pnpedi ppnedi ppnedi npepdi pnepdi neppdi enppdi penpdi epnpdi npepdi pnepdi neppdi enppdi penpdi epnpdi ppendi ppendi pepndi eppndi pepndi eppndi nppdei pnpdei nppdei pnpdei ppndei ppndei npdpei pndpei ndppei dnppei pdnpei dpnpei npdpei pndpei ndppei dnppei pdnpei dpnpei ppdnei ppdnei pdpnei dppnei pdpnei dppnei npedpi pnedpi nepdpi enpdpi pendpi epndpi npdepi pndepi ndpepi dnpepi pdnepi dpnepi nedppi endppi ndeppi dneppi ednppi denppi pednpi epdnpi pdenpi dpenpi edpnpi depnpi npedpi pnedpi nepdpi enpdpi pendpi epndpi npdepi pndepi ndpepi dnpepi pdnepi dpnepi nedppi endppi ndeppi dneppi ednppi denppi pednpi epdnpi pdenpi dpenpi edpnpi depnpi ppedni ppedni pepdni eppdni pepdni eppdni ppdeni ppdeni pdpeni dppeni pdpeni dppeni pedpni epdpni pdepni dpepni edppni deppni pedpni epdpni pdepni dpepni edppni deppni ippedn pipedn ippedn pipedn ppiedn ppiedn ipepdn piepdn ieppdn eippdn peipdn epipdn ipepdn piepdn ieppdn eippdn peipdn epipdn ppeidn ppeidn pepidn eppidn pepidn eppidn ippden pipden ippden pipden ppiden ppiden ipdpen pidpen idppen dippen pdipen dpipen ipdpen pidpen idppen dippen pdipen dpipen ppdien ppdien pdpien dppien pdpien dppien ipedpn piedpn iepdpn eipdpn peidpn epidpn ipdepn pidepn idpepn dipepn pdiepn dpiepn iedppn eidppn ideppn dieppn edippn deippn pedipn epdipn pdeipn dpeipn edpipn depipn ipedpn piedpn iepdpn eipdpn peidpn epidpn ipdepn pidepn idpepn dipepn pdiepn dpiepn iedppn eidppn ideppn dieppn edippn deippn pedipn epdipn pdeipn dpeipn edpipn depipn ppedin ppedin pepdin eppdin pepdin eppdin ppdein ppdein pdpein dppein pdpein dppein pedpin epdpin pdepin dpepin edppin deppin pedpin epdpin pdepin dpepin edppin deppin
Note: these 'words' (valid or invalid) are all the permutations of the word nipped. These words are obtained by scrambling the letters in nipped.