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There are 64 twenty-one-letter words containing A, 2C, O and 2U

acute␣mountain␣sicknessarctic␣ground␣squirrelsaustausch␣coefficientsCarcharodontosaurusesCarolingian␣minusculesCauchy-Riemann␣equationcomputationally␣securecomputer␣architecturescountercountermeasure counter-countermeasure counter-counter-measurecultural␣phylogeneticscultural␣practitionerscuriouser␣and␣curiousercutaneous␣rabbit␣effectdon't␣call␣us,␣we'll␣call␣youduplications␣of␣the␣cubeDupuytren's␣contractureduress␣of␣circumstanceserythrocyanosis␣crurumEurasian␣Economic␣Unionfasciomusculoskeletalfine-structure␣constant fine␣structure␣constantforum␣selection␣clausesfunctional␣equivalencefunctional␣linguisticsgreat␣cubicuboctahedraguanidinosuccinic␣acidhydraulic␣conductivityhyperautofluorescenceimmunopharmaceuticalsmalicious␣prosecutionsmetal␣cluster␣compoundsmetallonutraceuticalsmultifunctional␣cookerNeukirch-Uchida␣theoremneuromuscular␣junctionnitrosylsulphuric␣acidoctafluorocyclobutaneoctahydrocurcuminoidspast␣perfect␣continuouspropositional␣calculuspseudopharmaceuticalspulmonary␣circulationsquadrature␣of␣the␣circlequantum␣chromodynamicsreconstructed␣languageRepublic␣of␣South␣AfricaruncicantitruncationsRussian␣Orthodox␣Churchsarcoplasmic␣reticulumsmall␣cubicuboctahedrasocial␣insurance␣numbersocial␣security␣numberssuccinylsulfathiazolesulfur-crested␣cockatootruncated␣cuboctahedratuberculous␣dactylitistumour␣necrosis␣factorsumbilical␣cord␣cuttingsuniversal␣product␣codesventriculoventricularzygomaticoauricularis

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 161 words
  • Spanish Wiktionary: 4 words
  • Italian Wiktionary: no word
  • German Wiktionary: 5 words
  • Portuguese Wiktionary: 5 words
  • Dutch Wiktionary: 10 words

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