low-slope is part of:
    80%  roof
    50%  slope

low-slope contains:

Full expansion for low-slope:
   100%  1x3 Inverse-Low-Slope Brick
   100%  1x3 Low-Slope Brick
   100%  2x2 Low-Slope Apex Brick
   100%  2x3 Inverse-Low-Slope Brick
   100%  2x3 Low-Slope Brick
   100%  2x3 Low-Slope Brick w/ "R.E.S. Q"
   100%  2x3 Low-Slope Brick w/ Race "1"
   100%  2x3 Low-Slope Brick w/ Race "2"
   100%  2x3 Low-Slope Brick w/ Race "3"
   100%  2x3 Low-Slope Brick w/ Race "4"
   100%  2x3 Low-Slope Brick w/ Race "5"
   100%  2x3 Low-Slope Brick w/ Race "6"
   100%  2x3 Sloped Brick w/ Blue/Yel Triangles
   100%  2x3 Sloped Brick w/ Exploriens Logo
   100%  2x3 Sloped Brick w/ Extreme-Team Logo
   100%  2x3 Sloped Brick w/ Hydronauts Decor
   100%  2x3 Sloped Brick w/ Insectoids Panel
   100%  2x3 Sloped Brick w/ Red Stripes
   100%  2x3 Sloped Brick w/ Red/Yel Triangles
   100%  2x3 Sloped Brick w/ Stingrays Gills
   100%  2x3 Sloped Brick w/ White Stripes
   100%  2x3 Sloped Brick w/ Yellow Triangles
   100%  2x3 Sloped Brick w/Mouse/Rabbit Face
   100%  3x2 Low-Slope Apex Brick
   100%  3x3 Low-Slope Brick
   100%  3x3 Low-Slope Convex Corner Brick
   100%  3x4 Sloped Wheel-Well Brick
   100%  3x4 Sloped Wheel-Well Headlight Brick
   100%  3x4 Sloped Wheel-Well Headlight Brick w/ Fire Logo
   100%  3x4 Sloped Wheel-Well Headlight Brick w/ Police Badge Logo
   100%  4x2 Low-Slope Apex Brick
   100%  4x3 Low-Slope Brick
   100%  4x3 Sloped Brick w/ Blue/Yel Triangles
   100%  4x3 Sloped Brick w/ Red Stripes
   100%  4x3 Sloped Brick w/ Red/Yel Triangles
   100%  4x3 Sloped Brick w/ White Stripes
   100%  4x3 Sloped Brick w/ Yellow Triangles
   100%  6x3 Low-Slope Brick
   100%  6x6 Dual-Low-Slope Brick