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There are 66 twenty-one-letter words containing 2H, 2O, P, R and U

autodephosphorylatingautodephosphorylationautohistoradiographicautophosphorylationalbehavioural␣psychologycamphorsulphonic␣acidschemolithoautotrophicchemoradiotherapeuticchondroitinsulphatasecomes␣up␣with␣the␣rationscompact␣neighbourhoodsdocumentary␣hypothesisEmpire␣State␣of␣the␣Southencephaloneuropathiesglycerophosphoglucosehaberdasher␣of␣pronounshigh-fructose␣corn␣syrup high␣fructose␣corn␣syruphighly␣composite␣numberHouston,␣we␣have␣a␣problemhow␣do␣you␣spell␣this␣wordhydrodesulphurisationhydrodesulphurizationhydroureteronephroseshydroureteronephrosishydroxynaphthoquinoneimmunochromatographicimmunohistomorphologyneurohistopathologistneuroophthalmologicalneuroophthalmologists neuro-ophthalmologistsneuropsychopathologicneuropsychophysiologyneuropsychotherapistsnucleophosphoproteinsorthographic␣neighbourphilosophical␣furnacesphilosophicoreligiousphosphoglucoisomerasephosphoglyceromutasesphosphorus␣trichloridephotochemotherapeuticphotographic␣emulsionsphotolithoautotrophicpneumoencephalographypoikilochlorophyllousprotocatechualdehydespseudoanthropomorphicpseudohermaphroditismpseudophosphorylationpunctured␣neighborhoodputs␣one's␣hands␣togetherpyranonaphthoquinonesradiochemotherapeuticsemigroup␣homomorphismShipton-by-BeningbroughSouth␣Northamptonshirethat's␣the␣ticket␣for␣souptrifluoromethylphenyltriphenylphosphoniumstriphosphonucleosidestungstophosphoric␣acidultramicrophotographyultraphotomicrographswhat␣is␣your␣phone␣number

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 38 words
  • Spanish Wiktionary: 1 word
  • Italian Wiktionary: no word
  • German Wiktionary: 8 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 2 words

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