flexis lfexis felxis eflxis lefxis elfxis flxeis lfxeis fxleis xfleis lxfeis xlfeis fexlis efxlis fxelis xfelis exflis xeflis lexfis elxfis lxefis xlefis exlfis xelfis fleixs lfeixs felixs eflixs lefixs elfixs fliexs lfiexs filexs iflexs lifexs ilfexs feilxs efilxs fielxs ifelxs eiflxs ieflxs leifxs elifxs liefxs ilefxs eilfxs ielfxs flxies lfxies fxlies xflies lxfies xlfies flixes lfixes filxes iflxes lifxes ilfxes fxiles xfiles fixles ifxles xifles ixfles lxifes xlifes lixfes ilxfes xilfes ixlfes fexils efxils fxeils xfeils exfils xefils feixls efixls fiexls ifexls eifxls iefxls fxiels xfiels fixels ifxels xifels ixfels exifls xeifls eixfls iexfls xiefls ixefls lexifs elxifs lxeifs xleifs exlifs xelifs leixfs elixfs liexfs ilexfs eilxfs ielxfs lxiefs xliefs lixefs ilxefs xilefs ixlefs exilfs xeilfs eixlfs iexlfs xielfs ixelfs flexsi lfexsi felxsi eflxsi lefxsi elfxsi flxesi lfxesi fxlesi xflesi lxfesi xlfesi fexlsi efxlsi fxelsi xfelsi exflsi xeflsi lexfsi elxfsi lxefsi xlefsi exlfsi xelfsi flesxi lfesxi felsxi eflsxi lefsxi elfsxi flsexi lfsexi fslexi sflexi lsfexi slfexi feslxi efslxi fselxi sfelxi esflxi seflxi lesfxi elsfxi lsefxi slefxi eslfxi selfxi flxsei lfxsei fxlsei xflsei lxfsei xlfsei flsxei lfsxei fslxei sflxei lsfxei slfxei fxslei xfslei fsxlei sfxlei xsflei sxflei lxsfei xlsfei lsxfei slxfei xslfei sxlfei fexsli efxsli fxesli xfesli exfsli xefsli fesxli efsxli fsexli sfexli esfxli sefxli fxseli xfseli fsxeli sfxeli xsfeli sxfeli exsfli xesfli esxfli sexfli xsefli sxefli lexsfi elxsfi lxesfi xlesfi exlsfi xelsfi lesxfi elsxfi lsexfi slexfi eslxfi selxfi lxsefi xlsefi lsxefi slxefi xslefi sxlefi exslfi xeslfi esxlfi sexlfi xselfi sxelfi fleisx lfeisx felisx eflisx lefisx elfisx fliesx lfiesx filesx iflesx lifesx ilfesx feilsx efilsx fielsx ifelsx eiflsx ieflsx leifsx elifsx liefsx ilefsx eilfsx ielfsx flesix lfesix felsix eflsix lefsix elfsix flseix lfseix fsleix sfleix lsfeix slfeix feslix efslix fselix sfelix esflix seflix lesfix elsfix lsefix slefix eslfix selfix flisex lfisex filsex iflsex lifsex ilfsex flsiex lfsiex fsliex sfliex lsfiex slfiex fislex ifslex fsilex sfilex isflex siflex lisfex ilsfex lsifex slifex islfex silfex feislx efislx fieslx ifeslx eifslx iefslx fesilx efsilx fseilx sfeilx esfilx sefilx fiselx ifselx fsielx sfielx isfelx sifelx eisflx iesflx esiflx seiflx iseflx sieflx leisfx elisfx liesfx ilesfx eilsfx ielsfx lesifx elsifx lseifx sleifx eslifx selifx lisefx ilsefx lsiefx sliefx islefx silefx eislfx ieslfx esilfx seilfx iselfx sielfx flxise lfxise fxlise xflise lxfise xlfise flixse lfixse filxse iflxse lifxse ilfxse fxilse xfilse fixlse ifxlse xiflse ixflse lxifse xlifse lixfse ilxfse xilfse ixlfse flxsie lfxsie fxlsie xflsie lxfsie xlfsie flsxie lfsxie fslxie sflxie lsfxie slfxie fxslie xfslie fsxlie sfxlie xsflie sxflie lxsfie xlsfie lsxfie slxfie xslfie sxlfie flisxe lfisxe filsxe iflsxe lifsxe ilfsxe flsixe lfsixe fslixe sflixe lsfixe slfixe fislxe ifslxe fsilxe sfilxe isflxe siflxe lisfxe ilsfxe lsifxe slifxe islfxe silfxe fxisle xfisle fixsle ifxsle xifsle ixfsle fxsile xfsile fsxile sfxile xsfile sxfile fisxle ifsxle fsixle sfixle isfxle sifxle xisfle ixsfle xsifle sxifle isxfle sixfle lxisfe xlisfe lixsfe ilxsfe xilsfe ixlsfe lxsife xlsife lsxife slxife xslife sxlife lisxfe ilsxfe lsixfe slixfe islxfe silxfe xislfe ixslfe xsilfe sxilfe isxlfe sixlfe fexisl efxisl fxeisl xfeisl exfisl xefisl feixsl efixsl fiexsl ifexsl eifxsl iefxsl fxiesl xfiesl fixesl ifxesl xifesl ixfesl exifsl xeifsl eixfsl iexfsl xiefsl ixefsl fexsil efxsil fxesil xfesil exfsil xefsil fesxil efsxil fsexil sfexil esfxil sefxil fxseil xfseil fsxeil sfxeil xsfeil sxfeil exsfil xesfil esxfil sexfil xsefil sxefil feisxl efisxl fiesxl ifesxl eifsxl iefsxl fesixl efsixl fseixl sfeixl esfixl sefixl fisexl ifsexl fsiexl sfiexl isfexl sifexl eisfxl iesfxl esifxl seifxl isefxl siefxl fxisel xfisel fixsel ifxsel xifsel ixfsel fxsiel xfsiel fsxiel sfxiel xsfiel sxfiel fisxel ifsxel fsixel sfixel isfxel sifxel xisfel ixsfel xsifel sxifel isxfel sixfel exisfl xeisfl eixsfl iexsfl xiesfl ixesfl exsifl xesifl esxifl sexifl xseifl sxeifl eisxfl iesxfl esixfl seixfl isexfl siexfl xisefl ixsefl xsiefl sxiefl isxefl sixefl lexisf elxisf lxeisf xleisf exlisf xelisf leixsf elixsf liexsf ilexsf eilxsf ielxsf lxiesf xliesf lixesf ilxesf xilesf ixlesf exilsf xeilsf eixlsf iexlsf xielsf ixelsf lexsif elxsif lxesif xlesif exlsif xelsif lesxif elsxif lsexif slexif eslxif selxif lxseif xlseif lsxeif slxeif xsleif sxleif exslif xeslif esxlif sexlif xselif sxelif leisxf elisxf liesxf ilesxf eilsxf ielsxf lesixf elsixf lseixf sleixf eslixf selixf lisexf ilsexf lsiexf sliexf islexf silexf eislxf ieslxf esilxf seilxf iselxf sielxf lxisef xlisef lixsef ilxsef xilsef ixlsef lxsief xlsief lsxief slxief xslief sxlief lisxef ilsxef lsixef slixef islxef silxef xislef ixslef xsilef sxilef isxlef sixlef exislf xeislf eixslf iexslf xieslf ixeslf exsilf xesilf esxilf sexilf xseilf sxeilf eisxlf iesxlf esixlf seixlf isexlf siexlf xiself ixself xsielf sxielf isxelf sixelf
Note: these 'words' (valid or invalid) are all the permutations of the word flexis. These words are obtained by scrambling the letters in flexis.