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There are 72 twenty-one-letter words containing H, 2O, R and X

alkyldihydroxyacetonealkylhydroperoxidasesarbitration␣of␣exchangeAx-Grothendieck␣theorembenzoylhydroxylaminescarbomonoxyhemoglobincarboxamidomethylatedcarboxyhemoglobinemiachlorodeoxyadenosinescholesterohydrothoraxcomplexity-hiding␣proxycontrabass␣saxophonistdibutylhydroxytoluenedichlorophenoxyaceticdihydrodesoxymorphinedihydroxyacetophenonedihydroxybenzoic␣acidsdiketospirilloxanthindumber␣than␣a␣box␣of␣rocksEastern␣Orthodox␣Churchexchanging␣of␣contractsexocellobiohydrolasesexploding␣head␣syndromehemihexakisoctahedronheterogeneous␣mixturesheteropolyoxometalatehexachloroantimonateshexachlorocyclohexanehexachlorocyclohexenehexachlorofluoresceinhexafluoroantimonateshexafluoroisobutylenehexafluoroisopropanolhexafluorothioacetonehexahydroxoantimonatehexatriacontanoic␣acidhydroxyanthraquinoneshydroxycorticosteroidhydroxydeoxyguanosinehydroxyergocalciferolhydroxyethylcellulosehydroxyethylrutosideshydroxyisovaleric␣acidhydroxymethylcytosinehydroxynaphthoquinonehydroxyprostaglandinsisopropylthioxanthoneMadonna-whore␣complexesmetaxylohydroquinonesmethoxycarbonylationsmitochondrial␣matrixesneuropsychotoxicologyoctamethyltrisiloxaneoperational␣exhaustionorthorhombic␣pyroxenesoxyiminocephalosporinpharmacotoxicologicalphotodecarboxylationspolyhydroxyalkanoatesRussian␣Orthodox␣ChurchSerbian␣Orthodox␣Churchsopranino␣saxophonistssopranissimo␣saxophonesphenomaxillary␣fossaesuxamethonium␣chloridetauroursodeoxycholatetetrahydroxoberyllatetoxicopharmacologicaltriacetoxyborohydridetricyclohexylammoniumtrihydroxycholesterolWitherspoon-excludable

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 34 words
  • Spanish Wiktionary: no word
  • Italian Wiktionary: no word
  • German Wiktionary: 3 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 1 word

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