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There are 222 eighteen-letter words containing 2I and 4O

adenocorticotropicAfricoon-Americoons Africoon␣Americoonsaminochronologicalaminodocosanediolsangioleiomyolipomaangiolipoleiomyomaanthropobiologicalanthropobiologistsautodecompositionsautoprotonizationsbasidiobolomycosisbioanthropologicalbioanthropologistsbiochronologicallybiogeotechnologiesbiological␣controlscacospongionolideschloroformizationschloroquinolinoneschoriogonadotropinchromosomatisationchromosomatizationchronobiologicallycoccidioidomycosescoccidioidomycosiscoccidioidomycoticcoccolithophoridescolour␣coordinationcomproportionatingcomproportionationconidiobolomycosiscontinuation␣schoolcopromicroscopicalcoproparasitologiccosmophysiologicalcottonwood␣hibiscuscounteroppositionscounterpropositiondiazoamino␣compounddichloroindophenoldiiodohydroquinonedisproportionationdithiolopyrrolonesdolichomacrostomiddownflooding␣pointsecotoxicologicallyendocytobiologicalendocytobiologistseosinophilopoiesiseosinophilopoieticepietiocholanoloneepipodophyllotoxinepizootiologicallyethnoornithologistfibrobronchoscopicfluoromisonidazolefor␣your␣informationgeomicrobiologicalgeomicrobiologistsgitorocellobiosideGlorious␣Revolutionglucocorotoxigeninglucolipoapoptosisgnomonic␣projectionGorzów␣Wielkopolskiharmonic␣proportionheterocoordinationhistomorphologicalHodge␣decompositionhollow␣body␣positionHollywoodificationhomopolymerisationhomopolymerizationichnomorphologicalimmunopathobiologyimmunotoxicologistinversion␣of␣controlisonitroso␣compoundjockeys␣for␣positionlaminoforaminotomylexicophonologicallocatio␣et␣conductiomacroconidiophoresmesoionic␣compoundsmicrobiogeologistsmicroconsolidationmicroiontophoresismicroiontophoreticmicrometeorologistmicromorphologicalmicroneighborhoodsmicroneighbourhoodmicropaleontologicmicrothromboembolimicrozooplanktonicmitochondriotoxinsmitochondriotropicmonobromoindirubinmonochromatizationmonoisopropylaminemonophthongisationmonophthongizationmonoribonucleotidemonosaponificationmonotonic␣functionsmorphohistologicalmotion␣of␣confidencenano-decompositionsneocolonializationneurotoxicologicalneurotoxicologistsno-confidence␣motionnomination␣boroughsnoncompositionallynoncooperationistsnoncorticosteroidsnonglucocorticoidsnonmicrobiologicalnonproportionalitynormophysiologicaloesophagostomiasisŌkuninushi-no-mikotooligochaetologistsoligodendrogliomaloligodendrogliomasoligodendrogliosisoligofractionationoligooxopiperazineon␣a␣collision␣courseonomatopoieticallyontoepistemologiesopisthomonorchiineorganoboronic␣acidsorganolithotrophicornithocheiromorphorthogonalisationsorthogonalizationsorthonormalisationorthonormalizationorthopneic␣positionosteoimmunologicalosteoproliferationosteoradionecrosisosteoradionecroticOstrogothic␣Kingdomotomicroscopicallyoverpronounciationpalaeomicrobiologyphosphocholinationphosphoisoprenoidsphospholipoprotein

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