Brick Wedged, Sloped 4 x 4 Triple with 3 Ridges on Slope

Tile Round 1 x 1 Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no stud Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot Cone 1 x 1 [Top Groove] Plate Round 1 x 1 with Open Stud Technic Pin Connector Round 1L [Beam] Plate 1 x 2 Tile 1 x 1 with Groove