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There are 950 eighteen-letter words containing 2I, O, P, R, S and T

(page 4)

neoglyphioceratidsneoimpressionisticneurocristopathiesneuroleptospirosisneuropediatriciansneurophysiologistsneuropsychiatristsneuroretinopathiesneutrophilopoiesisnitroimidazopyransnobiliary␣particlesnoncomparabilitiesnoncompressibilitynoncooperationistsnonhistoriographicnoninterpretationsnonintrospectivelynonparasitologicalnonparticularisticnonpersonificationnonprocrastinatingnonsuppressibilitynonthienopyridinesnontranscriptionalnorsesquiterpenoidnucleoriboproteinsnurse␣practitionersoblique␣projectionsoccipitotransverseoligodendropathiesoligoteratospermiaOlympic␣Winter␣Gamesoperationalisationopisthobranchiatesopisthomonorchiineopposition␣researchoptical␣microscopesorthopediatriciansorthopneic␣positionorthopsychiatristsosteoproliferationosteoproliferativeotomicroscopicallyoveramplificationsoverapproximations over-approximationsovercapitalisationoveroptimisticallyoverparameterisingoverparenthesizingoverpressurisationoverpressurizationoversimplificationoversimplisticallyoversophisticationoverspecialisationoverspecializationoversusceptibilityoviraptorosaurianspachyrhizodontoidspalaeobiochemistrypalaeobiodiversitypalaeodistributionpalaeopropithecidspalaeornithologistpaleaodistributionpaleodistributionspaleonutritionistspaleornithologistspalinactinodromouspalmar␣fibromatosispancreaticogastricpancreaticosplenicpancreatolithiasispanhypopituitarismparaconductivitiesparadoxes␣of␣fictionparagastrioceratidparahallucinationsParaiba␣tourmalinesparavirtualisationPareto␣distributionparish␣pump␣politicsParry␣Sound␣Districtparticularisationsparticularizationspartition␣functionspatristic␣anthologypedestrian␣crossingpedestrianisationspedestrianizationspedostratigraphiespentatricopeptidesperceptualizationspericardiocentesespericardiocentesispericombobulationsperiodic␣structuresperipheralizationsperitoneal␣dialysispermineralizationsperspectivizationspescovegetarianismpetite␣bourgeoisiespetro-dictatorshipspharmacogeneticistpharmacokineticistpharmacometricianspharyngealizationspharyngointestinalpharyngolaryngitispharyngotonsilitisphosphatidylserinephospholipoproteinphosphorecognitionphosphoriboproteinphosphorodiamidatephosphorodithioatephosphorothioationphotochlorinationsphotocrosslinkingsphotodensitometricphotodisintegratedphotodisintegratesphotographic␣artistphotointermediatesphotoisomerisationphotoisomerizationphoto␣opportunitiesphotoperiodicitiesphotoperoxidationsphotoreversibilityphotosterilizationphrasal␣prepositionphthirapterologistphycoerythrobilinsphylobetadiversityphylostratigraphicphysiobiochemistrypicornavirologistspiezoresistivitiespillow␣dictionariespiperonylonitrilespiscirickettsiosisplagiogravitropismplastic␣deformationplatform␣capitalismpleuraspidotheriidplurinationalitiesplurisignificationpocket␣dictionariesPointe␣Coupee␣Parishpoints␣of␣divergence

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