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There are 104 eighteen-letter words containing I, O, 2R, T and X

auxiliary␣power␣unitBhartrhari's␣paradoxBordeaux␣turpentineBurali-Forti␣paradoxcarboxyprothrombincigar␣box␣guitaristsconjugate␣redox␣paircontrol␣experimentscopy-on-write␣proxiescorporate␣executivecounterorthodoxiesdeoxyerythronolidedextrocycloversiondextrotartaric␣aciddihydroxyanthronesdihydroxypteridinedinitrogen␣trioxidedragline␣excavatorselectroauxiliariesentorhinal␣cortexesexecutive␣producersexecutorial␣trusteeexecutory␣interestsextended-order␣drill extended␣order␣drillexterior␣derivativeexterosensorimotorexterritorializingextracorporealizedextraembryonicallyextrahepatobiliaryextramitochondrialextramorphologicalextraneous␣variableextraterritoriallyextrathermodynamicextreme␣programmingextreme␣ultravioletfixed-term␣contractsgross␣receipts␣taxeshexachloroiridateshexakistetrahedronhydrocarboxylationhydroperoxidationshydroperoxylationshydrostatic␣paradoxhydroxybutyric␣acidhydroxycarotenoidshydroxyderivativeshydroxymaprotilinehydroxystearic␣acidhydroxytryptamineshyperthyroxinaemiahyperthyroxinaemichyperthyroxinemiasinferiority␣complexletter␣of␣relaxationmetalexicographersMissouri␣Fox␣Trottermixed-interval␣chordMorris␣the␣Explainernetwork␣externalityneurosporaxanthinenorthward␣equinoxesOriental␣Orthodoxesoverapproximations over-approximationsoverextrapolationsperformance␣anxietypredecarboxylationProxima␣Centauriansproximate␣principleproximoposteriorlyred-billed␣leiothrixreprotoxicologicalrhombitrihexagonalruns␣for␣the␣exerciseruthenium␣tetroxidescimitar-horned␣oryxsexual␣intercoursessexual␣reproductionsuperextraordinarysuperiority␣complextetracarbon␣dioxidetetrakishexahedron tetrakis␣hexahedrontext␣door␣neighboursthromboprophylaxistranscarboxylationtransition␣matrixestricarboxylic␣acidstrihexosylceramidetrihydroxybenzenestrihydroxybenzoatetrihydroxystilbenetrimedoxime␣bromideunderapproximating under-approximatingunderapproximation under-approximationundercarboxylationunderextrapolationunderhydroxylationxerothermic␣periods

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