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There are 930 eighteen-letter words containing H, I, L, N and 2O

(page 6)

platinochloric␣acidplay␣with␣house␣moneypolished␣one's␣rocketpolishes␣one's␣rocketpolychlorobiphenylpolydolopimorphianpolyendocrinopathypolygon-circle␣graphpolyhomonucleotidepolyphenoloxidasespolyphenylene␣oxidepolyphloroglucinolpolyphthalocyaninepolysomnographicalpolysomnographistspolysporangiophytepolyvinylchlorides polyvinyl␣chloridespontomesencephalicportal␣hypertensionpositional␣asphyxiapositive␣lookbehindpostbronchodilatorpostpsychoanalyticpostrehabilitationprehospitalizationprephosphorylatingprephosphorylationprolymphangiogenicproteocephalideansprotoanthophylliteprotomitochondrialpro-vice-chancellorspseudohamiltonianspsychocivilizationpsychomanipulationpsychoneurologicalpsychoneurologistspsychoneuroticallypsychophoneticallypsychostimulationspsychotechnologiesptilochronologicalpulling␣in␣one's␣hornspulls␣one's␣own␣weightpyelonephritogenicpyrrolidinophenonequasisynchronouslyradiculoneuropathyradiochronologicalradiohalogenationsradiohumeral␣jointsraking␣over␣the␣coalsread␣someone␣to␣filthreality␣pornographyrecatholicizationsrehospitalisationsrehospitalizationsrenohistopathologyrephosphorylationsRepublic␣of␣the␣Congoresidential␣schoolsretinohypothalamicretinovasculopathyretrophylogenomicsrhamnogalacturonicrhamnosylglucosiderhamnosylglycosiderheofluidificationrhetorical␣questionrhinolaryngoscopesrhinoseptoplastiesrhizocompartmentalrhombitrihexagonalround-lobed␣hepaticarule␣with␣a␣rod␣of␣ironrunning␣out␣the␣clocksail␣close␣to␣the␣windsail␣on␣another␣boardSaint␣Thomas␣Lowlandsalpingooophoritis salpingo-oophoritissaurornitholestineschool-dinner␣ladies school␣dinner␣ladiessclerochronologiesScotch␣marine␣boilersemi-boarding␣schoolsensoribehaviouralseptorhinoplastiessets␣the␣world␣on␣fireshooting␣from␣the␣lipsit␣on␣someone's␣wheelskeletochronologicskeleton␣in␣the␣housesocial␣anthropologysociochronobiologysociotechnologicalsodicanthophyllitesolenofilomorphidssomaticosplanchnicsonosalpingographysoprillo␣saxophonesSouthern␣Californiasouthern␣yellow␣pineSouth␣Low␣Franconianspaghetti␣bolognesesphingoglycolipidsspirocycloheptanesspondyloepiphysealspondyloperipheralspondylotherapistsspongiotrophoblaststaphylinidologiststricken␣the␣coloursstrontiopyrochlorestylohyoid␣ligamentsulfamonomethoxinesulfhemoglobinemiasulfochlorinationssulphocarbonic␣acidsulphochlorinationsupertechnological super-technologicalsynchiotrophoblastsynchronized␣clockssynctiotrophoblastsyringohydromyeliatechnical␣knockoutstechnophilosophiestelephone␣directorytephrochronologistterminal␣bronchioletheophilanthropismtheophilanthropisttheothanatologicalthermoembolizationthermoreregulationthermosalinographsthermosalinometersthiadiazolidinonesthiazolidinedionesthiazoloquinolinesthink-aloud␣protocol think␣aloud␣protocol

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