puisne upisne piusne ipusne uipsne iupsne pusine upsine psuine spuine uspine supine pisune ipsune psiune spiune ispune sipune uispne iuspne usipne suipne isupne siupne puinse upinse piunse ipunse uipnse iupnse punise upnise pnuise npuise unpise nupise pinuse ipnuse pniuse npiuse inpuse nipuse uinpse iunpse unipse nuipse inupse niupse pusnie upsnie psunie spunie uspnie supnie punsie upnsie pnusie npusie unpsie nupsie psnuie spnuie pnsuie npsuie snpuie nspuie usnpie sunpie unspie nuspie snupie nsupie pisnue ipsnue psinue spinue ispnue sipnue pinsue ipnsue pnisue npisue inpsue nipsue psniue spniue pnsiue npsiue snpiue nspiue isnpue sinpue inspue nispue snipue nsipue uisnpe iusnpe usinpe suinpe isunpe siunpe uinspe iunspe unispe nuispe inuspe niuspe usnipe sunipe unsipe nusipe snuipe nsuipe isnupe sinupe insupe nisupe sniupe nsiupe puisen upisen piusen ipusen uipsen iupsen pusien upsien psuien spuien uspien supien pisuen ipsuen psiuen spiuen ispuen sipuen uispen iuspen usipen suipen isupen siupen puiesn upiesn piuesn ipuesn uipesn iupesn pueisn upeisn peuisn epuisn uepisn eupisn pieusn ipeusn peiusn epiusn iepusn eipusn uiepsn iuepsn ueipsn euipsn ieupsn eiupsn pusein upsein psuein spuein uspein supein puesin upesin peusin epusin uepsin eupsin pseuin speuin pesuin epsuin sepuin espuin usepin suepin uespin euspin seupin esupin piseun ipseun psieun spieun ispeun sipeun piesun ipesun peisun episun iepsun eipsun pseiun speiun pesiun epsiun sepiun espiun isepun siepun iespun eispun seipun esipun uisepn iusepn usiepn suiepn isuepn siuepn uiespn iuespn ueispn euispn ieuspn eiuspn useipn sueipn uesipn eusipn seuipn esuipn iseupn sieupn iesupn eisupn seiupn esiupn puines upines piunes ipunes uipnes iupnes punies upnies pnuies npuies unpies nupies pinues ipnues pniues npiues inpues nipues uinpes iunpes unipes nuipes inupes niupes puiens upiens piuens ipuens uipens iupens pueins upeins peuins epuins uepins eupins pieuns ipeuns peiuns epiuns iepuns eipuns uiepns iuepns ueipns euipns ieupns eiupns puneis upneis pnueis npueis unpeis nupeis puenis upenis peunis epunis uepnis eupnis pneuis npeuis penuis epnuis nepuis enpuis unepis nuepis uenpis eunpis neupis enupis pineus ipneus pnieus npieus inpeus nipeus pienus ipenus peinus epinus iepnus eipnus pneius npeius penius epnius nepius enpius inepus niepus ienpus einpus neipus enipus uineps iuneps unieps nuieps inueps niueps uienps iuenps ueinps euinps ieunps eiunps uneips nueips uenips eunips neuips enuips ineups nieups ienups einups neiups eniups pusnei upsnei psunei spunei uspnei supnei punsei upnsei pnusei npusei unpsei nupsei psnuei spnuei pnsuei npsuei snpuei nspuei usnpei sunpei unspei nuspei snupei nsupei puseni upseni psueni spueni uspeni supeni puesni upesni peusni epusni uepsni eupsni pseuni speuni pesuni epsuni sepuni espuni usepni suepni uespni euspni seupni esupni punesi upnesi pnuesi npuesi unpesi nupesi puensi upensi peunsi epunsi uepnsi eupnsi pneusi npeusi penusi epnusi nepusi enpusi unepsi nuepsi uenpsi eunpsi neupsi enupsi psneui spneui pnseui npseui snpeui nspeui psenui spenui pesnui epsnui sepnui espnui pnesui npesui pensui epnsui nepsui enpsui snepui nsepui senpui esnpui nespui enspui usnepi sunepi unsepi nusepi snuepi nsuepi usenpi suenpi uesnpi eusnpi seunpi esunpi unespi nuespi uenspi eunspi neuspi enuspi sneupi nseupi senupi esnupi nesupi ensupi pisneu ipsneu psineu spineu ispneu sipneu pinseu ipnseu pniseu npiseu inpseu nipseu psnieu spnieu pnsieu npsieu snpieu nspieu isnpeu sinpeu inspeu nispeu snipeu nsipeu pisenu ipsenu psienu spienu ispenu sipenu piesnu ipesnu peisnu episnu iepsnu eipsnu pseinu speinu pesinu epsinu sepinu espinu isepnu siepnu iespnu eispnu seipnu esipnu pinesu ipnesu pniesu npiesu inpesu nipesu piensu ipensu peinsu epinsu iepnsu eipnsu pneisu npeisu penisu epnisu nepisu enpisu inepsu niepsu ienpsu einpsu neipsu enipsu psneiu spneiu pnseiu npseiu snpeiu nspeiu pseniu speniu pesniu epsniu sepniu espniu pnesiu npesiu pensiu epnsiu nepsiu enpsiu snepiu nsepiu senpiu esnpiu nespiu enspiu isnepu sinepu insepu nisepu sniepu nsiepu isenpu sienpu iesnpu eisnpu seinpu esinpu inespu niespu ienspu einspu neispu enispu sneipu nseipu senipu esnipu nesipu ensipu uisnep iusnep usinep suinep isunep siunep uinsep iunsep unisep nuisep inusep niusep usniep suniep unsiep nusiep snuiep nsuiep isnuep sinuep insuep nisuep sniuep nsiuep uisenp iusenp usienp suienp isuenp siuenp uiesnp iuesnp ueisnp euisnp ieusnp eiusnp useinp sueinp uesinp eusinp seuinp esuinp iseunp sieunp iesunp eisunp seiunp esiunp uinesp iunesp uniesp nuiesp inuesp niuesp uiensp iuensp ueinsp euinsp ieunsp eiunsp uneisp nueisp uenisp eunisp neuisp enuisp ineusp nieusp ienusp einusp neiusp eniusp usneip suneip unseip nuseip snueip nsueip usenip suenip uesnip eusnip seunip esunip unesip nuesip uensip eunsip neusip enusip sneuip nseuip senuip esnuip nesuip ensuip isneup sineup inseup niseup snieup nsieup isenup sienup iesnup eisnup seinup esinup inesup niesup iensup einsup neisup enisup sneiup nseiup seniup esniup nesiup ensiup
Note: these 'words' (valid or invalid) are all the permutations of the word puisne. These words are obtained by scrambling the letters in puisne.