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There are 438 twelve-letter words containing 2I and 3O

abolitiondomaerobiologicagrobiologicamniochorionanionotropicapoposeidionascidiozooidaxiom␣of␣unionbicolorationbig␣O␣notationbiocognitionbiocolloidalbiocommoditybiocompositebiocorrosionbiocorrosivebioecologiesbioecologistbioeconomicsbioeconomiesbioeconomistbioerosionalbioevolutionbioflavonoidbioflotationbiogeologistBiondolillosbiooxidation bio-oxidationbiophotonicsbiopollutionbioprotonicsbiosociologybiosorptionsbiotaxonomicbiotoxicosesbiotoxicosisbiotribologybiozonationsblood-boilingboloceroididboobiliciousboogie-woogiebootiliciousbootyliciousbosonisationbosonizationboudoir␣pianobox␣of␣ivoriesBristol␣onionbromoiodizedbromonium␣ionchionophobiachlorobiocinchloroiodidechocoliciouschorioamnionchorionationchronobioticcimolodontidcincholoiponclonicotoniccodepositioncodicologiescodicologistcoeliotomies cœliotomiescolliotomiescollodionizecolonisationcolonizationcolophoniticcolorisationcolorizationcolpopoiesiscomic-bookishcomitologiescommognitioncommonitionscompositionscondoizationcongiopodidsconicopoliesconidiophoreconidiosporeconsociationconsopiationcookieholicscooksonioidscoonvictionscoopetitionsco-opinionistcoordination crdination co-ordinationcooxidationscopiotrophiccoronavirioncosmopoieticcosmopoliticcosmovisionscostoxiphoiddecision␣roomdiaconiologydiphyozooidsdiplococcoiddiplodocoidsdiplostomoiddissorophoidditopologiesdolichopodiddolomizationdomopoliticsdoxologizingembiotocoidsepizoochoricexobiologiesexobiologistexochorionicfloripondiosfoliologistsforepositiongeobiologistgeopositionsgnotobioticsgobiesocoidsgodovikovitegomophiosidegoniodorididgoniopholidsgonioscopiesgoodie-goodiegot␣it␣going␣onheirmologionheliobiologyhippoboscoidhippopotamoihistomonosishistoriologyholonomicityholothurioidhominivoroushomodiploidshomoiohydrichomoiousianshomoiousioushomoligationhomologisinghomologizinghomoorientinhomopositivehomotopicityhomozigosityhootin'␣tootin'horizonationhortonoliticiconologicaliconologistsidiomatologyidiomorphousidiotproofed idiot-proofedIliopoulosesIlocos␣Regionincommodiousinconcoctionindoor␣rowingindoors␣voiceindoor␣voicesinferior␣goodiodoanisolesiodoformizediodoformizesiodonium␣ionsiodopovidoneiodotyrosineionophoresisionophoreticionosorptionionosorptiveiridophoromaisoapoptoticisoflavonoidisognomonidsisoindolonesisooxazolineisopolyanionisopropoxideisoquinoloneisorhodopsinisorotationsisotopologicisotopomerickoilocytosiskoilocytoticKooria␣Moorialicorice␣rootlimnobiologyliopropominslobotomisinglobotomizinglocomobilitylocomotivitylong␣positionmicrobiologymicrobiotopemicroerosionmicromotionsmicroosmoticmicroroboticmicrotoroidsminorityhoodmispromotionmissionologymitobronitolmitoribosomemitozolomidemixicoronoidmodiolopsidsmodiomorphidmoirologistsmolinologistmongoloidismmonoamnioticmonocationic

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