rod-hole is part of:
    80%  loop
    50%  rod

rod-hole contains:
    90%  horiz-side-rod-hole  (indirectly)
    90%  side-rod-hole
    90%  vert-corner-rod-hole
    90%  vert-side-rod-hole  (indirectly)

Full expansion for rod-hole:
    90%  1x1 Plate w/ Horiz. Side Loop
    90%  1x2 Plate w/ 2 Offset Holed Studs
    80%  Ball w/ Round Stud
    80%  19L Hollow Rubber Hose
    70%  1x6x1 Rod Bar w/ 4 Top Holed Studs
    70%  2x2 Radar Dish
    50%  Laser-Gun w/ Side Sight
    50%  1x2 Plate w/ Triangular Beam & Hole
    50%  3x3 4-Knob Wheel w/ Axle Hole
    40%  1x1 Brick w/ Recessed SideStud
    40%  1x1 Cylinder Brick
    40%  1x1x2 Cylinder Brick
    40%  4x4 Swirl-Pattern Radar Dish
    40%  4x4 Umbrella/Radar Dish
    35%  Laser-Gun, Cone Nozzle
    30%  Flexible Emergency Stretcher Harness
    30%  Laser-Gun, Cyl. Nozzle
    30%  1x4x2 Rod Frame w/ 2 Top Studs
    30%  1x6x1 Rod Bar w/ 4 Top Studs
    30%  3x3 Technic Steering Wheel
    30%  4x4 Radar Dish
    25%  Explorien Laser-Gun
    25%  UFO Laser-Gun
    20%  Chainsaw Holder w/ Handle Rods
    20%  2x2 Webbed Dish w/ 3L Bent Rod
    15%  2x5x2 Strut w/ Sleek Conical Engine
    15%  5x5x2 Adventurers Car Interior
    10%  Binoculars
    10%  Chainsaw Blade
    10%  James Bond Sea Sprint
    10%  Opening Backpack
    10%  Sextant
    10%  10H Rod w/End-Slit,End-Ball,Side-Hole
    10%  13H Rod w/End-Slit,End-Ball,Side-Hole
    10%  2x2 Cyl.Brick w/ BlackBox, 2x4 Gray Dots
    10%  2x2 Cylinder Brick
    10%  3x3 Thin-Disc w/ Center Axle-Hole
     5%  Hand-Held Round Paddle
     5%  Reel-to-Reel Movie Camera w/ Slot
     5%  1x1 Cylinder Brick w/ 3 Bamboo Leaves
     5%  1x1x1.6 Chalice/Goblet w/ Stem