区系
  くけい
  noun (common) (futsuumeishi)
  ecozone (biogeographical realm)
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  句形
  くけい
  noun (common) (futsuumeishi)
  see: 句法・1
  poetry form (esp. haiku)
  see: 句法・2
  grammatical structure in kanbun
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  矩形
  くけい
  noun (common) (futsuumeishi)
  nouns which may take the genitive case particle `no'
  rectangle
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