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There are 126 eighteen-letter words containing O, 2P, R, 2S and U

absorption␣spectrumacute-phase␣proteinsamphisphaeriaceousathletic␣supportersautomorphism␣groupsautophosphorylatesBaldwin's␣phosphorusbiopsychospiritualBononian␣phosphorusbrownseed␣paspalumsChappuis␣absorptionchlorosulpholipidscompulsory␣purchasecomputer␣processorsconstruction␣paperscounteroppositionsdrepanosauromorphsEsopus␣Spitzenburgseustreptospondylusfirst-person␣pluralsfluorophosphonateshanging␣up␣one's␣spursHittorf's␣phosphorusHomberg's␣phosphorushydropolysulphideshyperphosphaturiashyposulphurous␣acidimmunosuppressantsimmunosuppressionsimmunosuppressivesinner␣product␣spacesleptosphaeriaceousmapping␣class␣groupsminisupercomputersmultispectroscopicneuroleptospirosisneuropsychopathiesneutrophilopoiesisnonsuppressibilityopportunity␣classesOrtsgruppenleiterspachypleurosauridsparallel␣postulatesparish␣pump␣politicsphaeosphaeriaceousphosphodestructionphosphofluoridatesphosphonopyruvatesphosphoribomutasesphosphorus␣cachexiaphosphorus␣necrosispolitical␣spectrumspolyethersulphonesporprismacovirusesPortuguese␣Sheepdogpossessive␣pronounspotassium␣feldsparspresuppositionallypresuppositionlesspretermitted␣spousePrince␣of␣Wales␣spursPrince␣Rupert's␣dropsprogressive␣suppersproverbs␣run␣in␣pairspseudocompensatorypseudohypertensionpseudoimprovementspseudoneuropterouspseudo-participialspseudophilosopherspseudophotospherespseudoprofessional pseudo-professionalpseudoprogressivespseudoprotodioscinpseudopterostigmaspseudoreplicationspseudo-scholarshipspseudoxyrhophiinespseudozygopleuridspsychotherapeuticspsychotherapeutistpurple␣loosestrifesput␣through␣its␣pacesrequest␣for␣proposalrespondeat␣superiorresumptive␣pronounsresupplementationssalpingopharyngeussapromycetophagoussecond-person␣pluralself-preoccupationssince␣Hector␣was␣a␣pupslamdunk␣approaches slam-dunk␣approaches slam␣dunk␣approachessong␣and␣supper␣roomsspecial␣prosecutorsspecial␣rapporteursspinous␣spider␣crabsspurious␣diphthongssubpostmastershipssupercompensationssuperimpregnationssuperminicomputerssupernova␣impostorssuperpersonalitiessuperphysiologicalsuperpositionalitysuperpowerlessnesssuperprofessionalssuperproficienciessupersophisticatedsuppressive␣personssupraphysiologicalthird-person␣pluralsthrombosuppressionthrombosuppressivetrypanosusceptibleunapproachablenessunpresumptuousnessup␣close␣and␣personalupdating␣one's␣priorsUpper␣Assam␣Divisionviviparous␣eelpoutswater␣vapor␣pressure

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