toto and american standard

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Across
  1. 2. A sloped roof type
  2. 4. A strong material made from cement, sand, and gravel.
  3. 5. The triangular part of a wall at the end of a pitched roof.
Down
  1. 1. An element used to go up or down inside a building.
  2. 3. A strong metal commonly used in building structures