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There are 26 eighteen-letter words containing I, O, 2P, R, S and X

antibioprophylaxisbisdioxopiperazinecarboxydipeptidasecopy-on-write␣proxiesexpression␣templateextrahepatosplenicextraphilosophicalhappy␣as␣a␣box␣of␣birdshydroxypiperidinesopening␣Pandora's␣boxoverapproximations over-approximationsperoxodiphosphatesphosphorus␣cachexiaphotoperoxidationsprototype␣extensionproximoposteriorlypseudoxyrhophiinessopranino␣saxophonesoprano␣saxophonistsoprillo␣saxophonessplit-complex␣numberSprengel␣explosivessuperexponentiallysuperiority␣complexthromboprophylaxis

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 33 words
  • Spanish Wiktionary: 2 words
  • Italian Wiktionary: no word
  • German Wiktionary: no word
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 1 word

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