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There are 133 eighteen-letter words containing I, O, 2P, 2S and U

absorption␣spectrumacute-phase␣proteinsamphisphaeriaceousantipopulationistsapple␣dumpling␣shopsathletic␣supportersautolipophagosomesautomorphism␣groupsBaldwin's␣phosphorusbiopsychospiritualBononian␣phosphorusChappuis␣absorptionchlorosulpholipidsconstruction␣paperscounteroppositionsEsopus␣Spitzenburgsfirst-person␣pluralsglucolipoapoptosisglucosphingolipidshanging␣up␣one's␣spursHittorf's␣phosphorushydropolysulphideshyperphosphaturiashyposulphite␣of␣sodahyposulphurous␣acidimmunosuppressantsimmunosuppressionsimmunosuppressivesinner␣product␣spacesleptosphaeriaceousmagnesium␣phosphatemapping␣class␣groupsminisupercomputersmultiple␣expansionsmultispectroscopicneuroleptospirosisneuropsychopathiesneutrophilopoiesisnonsuppressibilityopportunity␣classesOrtsgruppenleitersoutside␣passed␣pawnspachypleurosauridsparish␣pump␣politicsphaeosphaeriaceousphilosophunculistsphosphodestructionphosphofluoridatesphosphoglucokinasephosphoglucosaminephosphonucleosidesphosphonucleotidesphosphoribomutasesphosphorus␣cachexiaphosphorus␣necrosispiss␣money␣up␣the␣wallpolitical␣spectrumsporprismacovirusespossessive␣pronounspostconceptualistspotassium␣feldsparspresuppositionallypresuppositionlesspretermitted␣spousePrince␣of␣Wales␣spursPrince␣Rupert's␣dropsprogressive␣suppersproverbs␣run␣in␣pairspseudoappendicitispseudocapacitancespseudohypertensionpseudoimprovementspseudometaphysicalpseudo-participialspseudophacodonesispseudophakodonesispseudophilosopherspseudophilosophiespseudoprofessional pseudo-professionalpseudoprogressivespseudoprotodioscinpseudopsychologiespseudopsychopathicpseudopterostigmaspseudoreplicationspseudo-scholarshipspseudoxyrhophiinespseudozygopleuridspsychotherapeuticspsychotherapeutistpulling␣one's␣socks␣uppulling␣up␣one's␣sockspurple␣loosestrifesputs␣lipstick␣on␣a␣pigput␣someone's␣pipe␣output␣through␣its␣pacesqueen's␣bishop's␣pawnsrespondeat␣superiorresumptive␣pronounsresupplementationssalpingopharyngeusself-preoccupationssesquipedalophobiasince␣Hector␣was␣a␣pupspecial␣prosecutorsspecial␣rapporteursspinous␣spider␣crabsspurious␣diphthongssubpostmastershipssubspace␣topologiessulfoglycopeptidessupercompensationssuperimpregnationssuperminicomputerssupernova␣impostorssuperpersonalitiessuperphysiologicalsuperpositionalitysuperprofessionalssuperproficienciessupersophisticatedsupposititiousnesssuppressive␣personssupraphysiologicalSussex␣pond␣puddingsthird-person␣pluralsthrombosuppressionthrombosuppressivetrypanosusceptibleupdating␣one's␣priorsUpper␣Assam␣Divisionviviparous␣eelpouts

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