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There are 784 eighteen-letter words containing A, 2H, I and O

(page 3)

hexabromobiphenylshexachlorobiphenylhexachloroiridateshexakaidecahedronshexakisoctahedronshexakistetrahedronhierarchy␣of␣effectsHieroglyphic␣Luwianhigh-finned␣dragonetHippocratic␣wreathshistoarchitecturalhistoarchitectureshistomorphologicalhistophysiologicalhistorical␣researchhistoriosophicallyhistotechnologicalhit␣above␣one's␣weightholding␣all␣the␣cardsholoprosencephalichomopolysaccharidehonored␣in␣the␣breachhonour␣among␣thieveshonours␣in␣the␣breachHopcroft's␣algorithmHoughton␣Saint␣Gileshousehold␣applianceHumboldt␣River␣RanchHungarian␣chamomilehydrazide␣hydrazonehydroastrophyllitehydrochlorinationshydroflumethiazidehydrogeochemicallyhydrohalogenationshydromorphologicalhydrophenoxylationhydrophosphinationhydrostratigraphichydrosulphuric␣acidhydroxyamphetaminehydroxymethylationhydroxywithanolidehypercholesteremiahypereosinophiliashyperglycorrhachiahypermetamorphosishypermetamorphotichypermethioninemiahyperornithinaemiahyperphosphataemiahyperphosphataemichyperphosphaturiashyperphysiologicalhypersophisticatedhypertechnologicalhyperthrombinaemiahyperthyroxinaemiahyperthyroxinaemichyperthyroxinemiashypidiomorphicallyhypocholesteraemiahypochondroplasiashypochondroplastichypohemoglobinemiahypoparathyroidismhypophosphataemiashypophosphatasemiahypophosphoric␣acidhyposulphite␣of␣sodahyposulphurous␣acidhypothalamectomieshysterographicallyhysteropingographyichnomorphologicalichthyoarchaeologyichthyohaemotoxinsichthyophthiriasesichthyophthiriasisichthyoplanktologyichthyosarcotoxinsichthyosarcotoxismichthyosauromorphsicterohaemorrhagicideophonographicalimmunochemotherapyinside-the-park␣homerintraphilosophicalion␣channelopathiesisolithocholic␣acidisopropylphosphateis␣the␣Pope␣a␣CatholicI␣think␣therefore␣I␣amJapanese␣night␣heronjumping␣JehoshaphatkakorrhaphiophobiakakorrhaphiophobicKashmir␣bee␣hawkmothKirlian␣photographyknights␣of␣the␣hammerknights␣of␣the␣shearsKnochenhauer␣spirallecithotrophicallylesser␣whitethroatslight␣the␣touch-paperlike␣a␣hole␣in␣the␣headlipophosphoglycanslithium␣perchloratelithostratigrapherlithostratigraphiclived␣in␣the␣shadow␣oflives␣in␣the␣shadow␣oflooking␣the␣other␣waylymphangiographieslymphocytapheresislymphoepitheliomaslymphoscintigraphylysophosphatidateslysophospholipasesmacropetalichthyidmagnesium␣phosphateMalayan␣night␣heronsmalice␣aforethoughtmaraschino␣cherriesmechanobiochemicalmechanographicallymechanotherapeuticmetalloamphiphilesmetaphosphoric␣acidmethanochondroitinméthode␣champenoisemethoxyamphetaminemethyllanthioninesmethylotrophicallymicrobrachytherapymicrophanerophytesmicrophotographersmicrophotographingmitochondriopathicmonophosphokinasesmonophthongisationmonophthongizationmonothiohemiacetalmonothiophosphatesmorphogeographical

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