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There are 114 twenty-letter words containing 2I, S and X

acetylhexosaminidaseaminoexotripeptidaseataxia-telangiectasiaaurintricarboxylatesbaritone␣saxophonistsbarred␣spiral␣galaxiesbisdemethoxycurcuminblue␣book␣examinationsboyfriend␣experiencescarboxamidoadenosinecarboxamidopeptidasecarboxyglutamic␣acidsclinical␣examinationscompetitive␣exclusioncontextual␣criticismscyclohexadienedionesdecaoxotetrasilicatedecontextualisationsdecontextualizationsde␣minimis␣non␣curat␣lexdeoxyribonucleosidesdeoxyribonucleotidesdeoxyribopyrimidinesdesoxyribonucleosidedesoxyribonucleotidediethylthioxanthonesdihydroxytryptaminesdimethylpolysiloxane dimethyl␣polysiloxaneentrance␣examinationsepoxyeicosatrienoidsexclusive␣disjunctionexeleutherostomizingexhausted␣combinationexistentialisticallyexponential␣equationsexponential␣functionsexponential␣smoothingexpression␣of␣interestextrageniculostriateextrapetiolar␣stipuleextraterritorializesextravascularizationfactorial␣experimentsfirst-chance␣exceptiongeniculoextrastriatehexamethyldisilanizehexamethyldisilazanehexamethyldisilizanehexamethyldisiloxanehydroxycinnamic␣acidshydroxyglutaric␣acidsichthyoacanthotoxinsimperial␣examinationsinextinguishablenessinferiority␣complexesinterference␣maximumsintertextualizationsinverted␣circumflexesmanic␣pixie␣dream␣girlsmass␣extinction␣eventsmatrix␣decompositionsMaximilian␣sunflowersmonofixation␣syndromemulticultural␣Marxismmulti-word␣expressionsnetwork␣externalitiesnumerical␣taxonomistsoligodeoxythymidinesoligodesoxythymidineOrthodox␣Christianityperformance␣anxietiesperoxophosphoric␣acidphosphorus␣oxynitridephysical␣examinationspoison␣at␣the␣box␣officepolydimethylsiloxanepreexisting␣condition pre-existing␣conditionpremaxillary␣agenesisprinciple␣of␣explosionproducer␣price␣indexesproxigean␣spring␣tidespseudoapproximationsputting␣someone␣in␣a␣boxradiculoplexopathiesrecontextualisationsrecontextualizationsred-billed␣leiothrixesreflexive␣possessivesRNA␣expression␣profilescimitar-horned␣oryxesselenium␣hexafluoridesexual␣fraternizationsimplified␣expressionsopranino␣saxophonistsoprillo␣saxophonistssulphamethoxydiazinesuperextraordinarilysuperiority␣complexessynchronisation␣proxysynchronization␣proxytetracarboxylic␣acidsTexas␣spotted␣whiptailtransformation␣matrixunextinguishablenessuniversity␣extensionsuranium␣hexafluoridesurotoxic␣coefficientsValsalvian␣experimentvinyltrialkoxysilanevis␣medicatrix␣naturaevulnerability␣indexesxylooligosaccharides

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