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There are 344 eighteen-letter words containing 4I, O, S and T

(page 3)

septenvigintillionsilicotungstic␣acidsociomaterialitiessoil␣classificationsolubilizabilitiesSpanish␣Inquisitionsquinting␣modifiersState␣of␣Mississippistatisticalizationstibiopalladinitesstrict␣implicationssulphindigotic␣acidsupercivilisationssupercivilizationssuperficializationsympathoinhibitionsynthetic␣divisionsterritorial␣pissingtestimonializationtext␣simplificationthiadiazolidinonesthiazolidinedionesthioesterificationtipranavir␣disodiumtrailing␣commissiontranshistoricizingtransindividuationtriangular␣divisiontungstosilicic␣acidultraintuitionistsunconditionalitiesuniformitarianistsunintentionalitiesuniversities␣of␣lifeutilization␣reviewsverisimilitudinousvermistabilizationvicarious␣liabilityworking␣definitionswrits␣of␣prohibition

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