cross-axle is part of:
    50%  axle

cross-axle contains:
    25%  cross-axle-hole

Full expansion for cross-axle:
   100%  #10 Technic Axle
   100%  #12 Technic Axle
   100%  #14 Technic Axle
   100%  #16 Technic Axle
   100%  #2 Notched Technic Axle
   100%  #2 Technic Axle
   100%  #3 Technic Axle
   100%  #4 Technic Axle
   100%  #5 Technic Axle
   100%  #6 Technic Axle
   100%  #8 Technic Axle
    90%  3L Technic Axle w/ End Stud
    80%  #1 Technic Axle w/ Ball
    80%  2L Technic Axle/Peg
    70%  #4 Technic Axle w/ Dual End Sockets
    70%  3L Technic Catch
    60%  2L Technic Piston Crank w/ Axle
    25%  #1 Technic Angle Joint (End)
    25%  #2 Technic Angle Joint (180 deg.)
    25%  #3 Technic Angle Joint (157.5 deg.)
    25%  #4 Technic Angle Joint (135 deg.)
    25%  #5 Technic Angle Joint (112.5 deg.)
    25%  #6 Technic Angle Joint (90 deg.)
    25%  2L Ribbed Technic Axle Extender
    22%  1.5x1.5 Micro-Motor-Style Pulley
    22%  1x1x.5 Technic Pulley w/ Toothing
    22%  1x1x.5 Toothless Technic Pulley
    22%  1x1x1 Technic Stop Bushing
    22%  1x2 Brick w/ Side Technic Axle Hole
    22%  2L Technic Crank/Skew Connector
    22%  2L Technic Cross-Block Connector
    22%  2x2 Technic Cross-Axle Hub
    22%  3L Technic Cross-Block Connector w/ Nibs
    22%  4L Technic Universal Joint
    20%  1x1x2.3 Changeover Catch
    20%  2L Technic Cross Catch
    20%  2L Technic Toggle Joint
    20%  2x2 Technic Cross-Axle Hub w/Lg.Tires
    20%  2x2 Technic Cross-Axle Hub w/Sm.Tires
    20%  2x2x3 Jet Engine Turbine w/ Axle
    20%  2x3 Cam
    18%  2L Technic Piston Rod w/ 2 Side Studs
    18%  3x3 Technic Steering Wheel
    18%  4.5x4.5 Technic Steering Wheel
    12%  2x2 Cyl.Brick w/ BlackBox, 2x4 Gray Dots
    12%  2x2 Cylinder Brick
    12%  3x3 4-Knob Wheel w/ Axle Hole
    12%  3x3 Technic Pulley
    12%  3x3 Technic Wheel Hub/Tri-Pulley
    12%  3x3 Thin-Disc w/ Center Axle-Hole
    10%  3x3 Technic Pulley w/ Tires
    10%  4x4 Technic Hub w/ "43.2x28 S" Tire
    10%  5x5 Technic Hub w/ "68.8x40 Q" Tire
     8%  Aquazone-Style Propellor
     8%  4x4x1.3 Grooved Hub w/ 7 Peg Holes
     8%  4x4x1.6 Grooved Hub w/ 7 Peg Holes
     8%  4x4x2 Cylinder Hub w/ 6 Peg Holes
     6%  2x2 Brick w/ Propellor Housing
     5%  3-Blade Rotor-Plate w/ Toothing
     5%  4x4 Dome-Backing Disc w/ 1x2 Plate
     5%  4x4x1 Cylinder Brick w/ 4 Peg Holes
     5%  4x4x2 Cowling w/ Axle Hole
     4%  1x5 Plate w/ End Holes & Toothing
     2%  2x5x2 Strut w/ Sleek Conical Engine