yupons uypons ypuons pyuons upyons puyons yuopns uyopns youpns oyupns uoypns ouypns ypouns pyouns yopuns oypuns poyuns opyuns upoyns puoyns uopyns oupyns pouyns opuyns yupnos uypnos ypunos pyunos upynos puynos yunpos uynpos ynupos nyupos unypos nuypos ypnuos pynuos ynpuos nypuos pnyuos npyuos upnyos punyos unpyos nupyos pnuyos npuyos yuonps uyonps younps oyunps uoynps ouynps yunops uynops ynuops nyuops unyops nuyops yonups oynups ynoups nyoups onyups noyups uonyps ounyps unoyps nuoyps onuyps nouyps yponus pyonus yopnus oypnus poynus opynus ypnous pynous ynpous nypous pnyous npyous yonpus oynpus ynopus nyopus onypus noypus ponyus opnyus pnoyus npoyus onpyus nopyus uponys puonys uopnys oupnys pounys opunys upnoys punoys unpoys nupoys pnuoys npuoys uonpys ounpys unopys nuopys onupys noupys ponuys opnuys pnouys npouys onpuys nopuys yuposn uyposn ypuosn pyuosn upyosn puyosn yuopsn uyopsn youpsn oyupsn uoypsn ouypsn ypousn pyousn yopusn oypusn poyusn opyusn upoysn puoysn uopysn oupysn pouysn opuysn yupson uypson ypuson pyuson upyson puyson yuspon uyspon ysupon syupon usypon suypon ypsuon pysuon yspuon sypuon psyuon spyuon upsyon pusyon uspyon supyon psuyon spuyon yuospn uyospn youspn oyuspn uoyspn ouyspn yusopn uysopn ysuopn syuopn usyopn suyopn yosupn oysupn ysoupn syoupn osyupn soyupn uosypn ousypn usoypn suoypn osuypn souypn yposun pyosun yopsun oypsun poysun opysun ypsoun pysoun yspoun sypoun psyoun spyoun yospun oyspun ysopun syopun osypun soypun posyun opsyun psoyun spoyun ospyun sopyun uposyn puosyn uopsyn oupsyn pousyn opusyn upsoyn pusoyn uspoyn supoyn psuoyn spuoyn uospyn ouspyn usopyn suopyn osupyn soupyn posuyn opsuyn psouyn spouyn ospuyn sopuyn yupnso uypnso ypunso pyunso upynso puynso yunpso uynpso ynupso nyupso unypso nuypso ypnuso pynuso ynpuso nypuso pnyuso npyuso upnyso punyso unpyso nupyso pnuyso npuyso yupsno uypsno ypusno pyusno upysno puysno yuspno uyspno ysupno syupno usypno suypno ypsuno pysuno yspuno sypuno psyuno spyuno upsyno pusyno uspyno supyno psuyno spuyno yunspo uynspo ynuspo nyuspo unyspo nuyspo yusnpo uysnpo ysunpo syunpo usynpo suynpo ynsupo nysupo ysnupo synupo nsyupo snyupo unsypo nusypo usnypo sunypo nsuypo snuypo ypnsuo pynsuo ynpsuo nypsuo pnysuo npysuo ypsnuo pysnuo yspnuo sypnuo psynuo spynuo ynspuo nyspuo ysnpuo synpuo nsypuo snypuo pnsyuo npsyuo psnyuo spnyuo nspyuo snpyuo upnsyo punsyo unpsyo nupsyo pnusyo npusyo upsnyo pusnyo uspnyo supnyo psunyo spunyo unspyo nuspyo usnpyo sunpyo nsupyo snupyo pnsuyo npsuyo psnuyo spnuyo nspuyo snpuyo yuonsp uyonsp younsp oyunsp uoynsp ouynsp yunosp uynosp ynuosp nyuosp unyosp nuyosp yonusp oynusp ynousp nyousp onyusp noyusp uonysp ounysp unoysp nuoysp onuysp nouysp yuosnp uyosnp yousnp oyusnp uoysnp ouysnp yusonp uysonp ysuonp syuonp usyonp suyonp yosunp oysunp ysounp syounp osyunp soyunp uosynp ousynp usoynp suoynp osuynp souynp yunsop uynsop ynusop nyusop unysop nuysop yusnop uysnop ysunop syunop usynop suynop ynsuop nysuop ysnuop synuop nsyuop snyuop unsyop nusyop usnyop sunyop nsuyop snuyop yonsup oynsup ynosup nyosup onysup noysup yosnup oysnup ysonup syonup osynup soynup ynsoup nysoup ysnoup synoup nsyoup snyoup onsyup nosyup osnyup sonyup nsoyup snoyup uonsyp ounsyp unosyp nuosyp onusyp nousyp uosnyp ousnyp usonyp suonyp osunyp sounyp unsoyp nusoyp usnoyp sunoyp nsuoyp snuoyp onsuyp nosuyp osnuyp sonuyp nsouyp snouyp yponsu pyonsu yopnsu oypnsu poynsu opynsu ypnosu pynosu ynposu nyposu pnyosu npyosu yonpsu oynpsu ynopsu nyopsu onypsu noypsu ponysu opnysu pnoysu npoysu onpysu nopysu yposnu pyosnu yopsnu oypsnu poysnu opysnu ypsonu pysonu ysponu syponu psyonu spyonu yospnu oyspnu ysopnu syopnu osypnu soypnu posynu opsynu psoynu spoynu ospynu sopynu ypnsou pynsou ynpsou nypsou pnysou npysou ypsnou pysnou yspnou sypnou psynou spynou ynspou nyspou ysnpou synpou nsypou snypou pnsyou npsyou psnyou spnyou nspyou snpyou yonspu oynspu ynospu nyospu onyspu noyspu yosnpu oysnpu ysonpu syonpu osynpu soynpu ynsopu nysopu ysnopu synopu nsyopu snyopu onsypu nosypu osnypu sonypu nsoypu snoypu ponsyu opnsyu pnosyu nposyu onpsyu nopsyu posnyu opsnyu psonyu sponyu ospnyu sopnyu pnsoyu npsoyu psnoyu spnoyu nspoyu snpoyu onspyu nospyu osnpyu sonpyu nsopyu snopyu uponsy puonsy uopnsy oupnsy pounsy opunsy upnosy punosy unposy nuposy pnuosy npuosy uonpsy ounpsy unopsy nuopsy onupsy noupsy ponusy opnusy pnousy npousy onpusy nopusy uposny puosny uopsny oupsny pousny opusny upsony pusony uspony supony psuony spuony uospny ouspny usopny suopny osupny soupny posuny opsuny psouny spouny ospuny sopuny upnsoy punsoy unpsoy nupsoy pnusoy npusoy upsnoy pusnoy uspnoy supnoy psunoy spunoy unspoy nuspoy usnpoy sunpoy nsupoy snupoy pnsuoy npsuoy psnuoy spnuoy nspuoy snpuoy uonspy ounspy unospy nuospy onuspy nouspy uosnpy ousnpy usonpy suonpy osunpy sounpy unsopy nusopy usnopy sunopy nsuopy snuopy onsupy nosupy osnupy sonupy nsoupy snoupy ponsuy opnsuy pnosuy nposuy onpsuy nopsuy posnuy opsnuy psonuy sponuy ospnuy sopnuy pnsouy npsouy psnouy spnouy nspouy snpouy onspuy nospuy osnpuy sonpuy nsopuy snopuy
Note: these 'words' (valid or invalid) are all the permutations of the word yupons. These words are obtained by scrambling the letters in yupons.