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There are 78 eighteen-letter words containing C, D, 2H, O and 2R

anhydrosaccharidesaspidorhynchiformsboardinghouse␣reachcardiosphygmographcephaloradiographschlorohydrocarbonschondrodystrophiaschondrodystrophieschondrodystrophoidchromolithographedcold␣hands,␣warm␣heartdehydrochlorinasesdehydrochlorinateddehydrocholesteroldichlorophenarsinedihydroanthracenesdihydrotachysterolDorchester-on-ThamesechocardiographersechocardiographiesechocardiographistecohydrogeomorphicethylhydrocupreineFischer␣random␣chessGordie␣Howe␣hat␣trickheavy␣marching␣orderhe␣could␣be␣her␣fatherhemihydrochlorideshemorrhoidectomieshermaphroditicallyheterodisaccharidehexachloroiridateshickory␣horned␣devilhonored␣in␣the␣breachHumboldt␣River␣Ranchhydrochlorinationshydromorphologicalhydrostratigraphichydrosulphuric␣acidhydroxychloroquinehydroxycholesterolmajor␣seventh␣chordsmicroneighborhoodsmicroneighbourhoodminor␣seventh␣chordsmonohydrochloridespalaeohydrographicpepsinhydrochloricphonocardiographicphosphorylceramidepreached␣to␣the␣choirprotochlorophilidepseudohypertrophicpseudoorthorhombicpyrophosphoric␣acidradiochromatographreproductive␣healthrhombicdodecahedra rhombic␣dodecahedrarhombicuboctahedrarhombidodecahedralrhombidodecahedronrhombododecahedralRichardson's␣theoremride␣the␣cotton␣horserode␣the␣cotton␣horsespectrodichrographtetrahydrochloridethermohydrodynamicthiocarbohydrazidethree␣score␣and␣fifthThrowback␣Thursdaysthrowing␣in␣the␣cardstrichlormethiazidetrichlorodiphenylstriphosphoric␣acidsunderchoreographedwhite␣carbohydrates

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 43 words
  • Spanish Wiktionary: 2 words
  • Italian Wiktionary: no word
  • German Wiktionary: 81 words
  • Portuguese Wiktionary: 1 word
  • Dutch Wiktionary: 23 words

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