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There are 173 twelve-letter words containing 2I, 3O and R

aerobiologicagrobiologicamniochorionanionotropicbicolorationbiocorrosionbiocorrosivebioerosionalbioprotonicsbiosorptionsbiotribologyboloceroididboudoir␣pianobox␣of␣ivoriesBristol␣onionbromoiodizedbromonium␣ionchlorobiocinchloroiodidechorioamnionchorionationchronobioticcolorisationcolorizationconidiophoreconidiosporecoordination coördination co-ordinationcopiotrophiccoronaviriondecision␣roomdissorophoidepizoochoricexochorionicfloripondiosforepositiongoniodorididheirmologionhistoriologyholothurioidhominivoroushomoiohydrichomoorientinhorizonationhortonoliticidiomorphousidiotproofed idiot-proofedIlocos␣Regionindoor␣rowingindoors␣voiceindoor␣voicesinferior␣goodiodoformizediodoformizesiodotyrosineionophoresisionophoreticionosorptionionosorptiveiridophoromaisopropoxideisorhodopsinisorotationsisotopomericKooria␣Moorialicorice␣rootliopropominsmicrobiologymicrobiotopemicroerosionmicromotionsmicroosmoticmicroroboticmicrotoroidsminorityhoodmispromotionmitobronitolmitoribosomemixicoronoidmodiomorphidmoirologistsmonomicrobicmonoperiodicmonzodioriteMoorish␣idolsmoronizationmotorisationmotorizationnitrosothiolnoninotropicnonisotropicnonsoporificnorsolorinicodorobiosideodourisationodourizationoil␣of␣vitriololigomorphicoligotrophiconeirologiesoneirologistoneirophobiaoneiroscopiconion␣routingoolitiferousophiomorphicopinionatorsopistoporinsorbitotomiesorganoiodideorganoiodineoriostomatidorismologistornithodoridornithodorinornithologicosteoporiticovariotomiesovariotomistovariotomizeovoinhibitoroxycorticoidpavilion␣roofphidoloporidpocilloporidpocilloporinpoliovirionspontoporeiidpontoporiidsporritoxinolproditoriouspropositionsprotobionticprotobiosideprotodioscinprotohominidprotoiodidesradiobiologyradiocolloidradioisotopereoppositionrhinolophoidriot␣boostingrobotisationrobotizationRogowski␣coilrootin'-tootin' rootin'␣tootin'root␣positionrotonizationscorpionoidsscorpiosidolshooting-iron shooting␣ironsociohistorysocioroboticsonorisationsonorizationsophorolipidsoteriologicstoriologistthiotropocintopoisomerictoxicophorictroglobiotictrophobiosistrophobioticvisitor's␣book visitors'␣bookvisuomotoricvomitrocious

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