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There are 87 twenty-one-letter words containing A, I, O, S, T and X

abstract␣expressionism Abstract␣Expressionismabstract␣expressionistacetylhexosaminidasesaminopolycarboxylatesaxiom␣of␣extensionalitybenzenedicarboxylatesbenzyloxyphthalimidesbox␣oneself␣into␣a␣cornerchosen-plaintext␣attackconservative␣extensioncontrabass␣saxophonistcoordination␣complexesCoxeter-Dynkin␣diagramscyclohexadepsipeptidecyclomaltodextrinasesdeoxyribonucleotidasedidesmethyldoxylaminedigital␣converter␣boxesdihydroxynaphthalenesdihydroxyphenylisatindiketospirilloxanthindimethoxyamphetaminesdimethoxyquinazolinesdimethylpolysiloxanesepoxyeicosapentaenoicexchanging␣of␣contractsexploratory␣committeesexponential␣smoothingsextensional␣definitionexternal␣oblique␣muscleexternopyramidisationextraconstitutionallyextragastrointestinalextrapetiolar␣stipulesextraterritorialitiesfirst-chance␣exceptionsFrankenstein␣complexesgoods␣and␣services␣taxeshaving␣sexual␣relationshemihexakisoctahedronhexachloroantimonateshexafluoroantimonateshexafluoroisobutylenehydroxyanthraquinoneshydroxyprostaglandinsichthyoallyeinotoxisminner␣orbital␣complexesinternal␣carotid␣plexusisopropylthioxanthoneJoule-Thomson␣expansionloncastuximab␣tesirineMaxwell␣Street␣Polishesmetaxylohydroquinonesmethoxycarbonylationsmethyltriethoxysilanemicrocrystalline␣waxesmitochondrial␣matrixesmonocarboxypeptidasesmonofixation␣syndromesneoconvallatoxolosideoctamethyltrisiloxaneoperational␣exhaustionoxyfunctionalizationspaleohexaploidisationphotodecarboxylationspolydimethylsiloxanespterygomaxillary␣fossareactive␣oxygen␣speciesRevisionist␣Maximalismright␣stochastic␣matrixRNA␣expression␣patternsRoss-Littlewood␣paradoxRussian␣Orthodox␣ChurchSerbian␣Orthodox␣Churchsmart-reference␣proxiessocial␣anxiety␣disordersopranino␣saxophonistssuxamethonium␣chloridetakes␣it␣to␣the␣next␣levelthree␣marks␣of␣existenceto␣a␣first␣approximationvinyltrialkoxysilaneswhen␣one␣least␣expects␣itWitherspoon-excludableWizard␣of␣Oz␣experimentsxenotransplantability

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