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There are 46 twenty-one-letter words containing A, B, C, G, H, I and O

algebraic␣number␣theoryall␣that␣and␣a␣bag␣of␣chipsarbitration␣of␣exchangearmored␣combat␣fightingasymptotic␣giant␣branchatherothrombogenicityautobiographicalizingback␣to␣the␣drawing␣boardbad␣things␣come␣in␣threesballistocardiographicbehavioural␣psychologybibliographic␣databaseBig␣Bend␣patchnose␣snakebiohydrometallurgicalbiphosphoglyceric␣acidbleeding␣like␣a␣stuck␣hogbronchoesophagoscopic broncho-esophagoscopiccalibrated␣focal␣lengthcarbomonoxyhemoglobincarboxyhemoglobinemiacheckerboard␣renderingchicken-and-egg␣problemschronobiogeographicalcompact␣neighbourhoodsdishonorable␣dischargedropping␣like␣a␣hot␣brickgalactic␣habitable␣zonegreat␣cubicuboctahedrahypogammaglobulinemicJapanese␣bunching␣onionlaryngobronchoscopiesneurobiopsychologicalneuropsychobiologicalnoninterchangeabilityNorth␣American␣wheel␣bugorthographic␣neighborsorthographic␣neighbourpalaeobiogeographicalpharyngotympanic␣tubesPotter-Bucky␣diaphragmspublic-key␣cryptography public␣key␣cryptographyrecharge␣one's␣batteriesstable␣matching␣problemThompson␣submachine␣gun

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 51 words
  • Spanish Wiktionary: 1 word
  • Italian Wiktionary: no word
  • German Wiktionary: 66 words
  • Portuguese Wiktionary: 2 words
  • Dutch Wiktionary: 13 words

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