peg is part of:

peg contains:
    90%  friction-peg
    80%  side-peg
    70%  top-peg
    60%  bottom-peg
    25%  peg-hole
    10%  tiny-peg

Full expansion for peg:
   100%  2L Technic Peg
    90%  3-Finger Link w/ Peg
    90%  1.5L Technic 3/4-Peg
    90%  2L Technic Friction Peg
    90%  3L Technic Friction Peg
    81%  2-Finger Link w/ Friction-Peg
    81%  2-Finger Scored Link w/ Friction-Peg
    81%  3-Finger Link w/ Friction-Peg
    81%  3-Finger Scored Link w/ Friction-Peg
    80%  1.2L Technic 1/2-Peg w/ End Stud
    80%  1x2 Brick w/ Side Peg
    80%  2L Technic Axle/Peg
    80%  2x2 Brick w/ Opposing Side Pegs
    80%  2x2 Brick w/ Side Peg
    80%  2x4 Brick w/ Opposing End Pegs
    80%  2x4 Plate w/ Opposing End Pegs
    72%  #1 Technic Friction Peg w/ Ball
    72%  3L Technic Friction Peg w/ Stop Bush
    70%  2x2 Tile w/ Top Peg
    64%  4x8 Brick w/ 4 Side Pegs
    60%  2x2 Plate w/ Bottom Peg
    56%  4x6 Train Bogieplate
    54%  2x2x1.6 Dual-Peg Steering-Arm A-Frame
    25%  2L Cylinder w/ Dual End Peg Holes
    25%  2x2 Plate w/ Dual Horiz. Peg Holes
    24%  2x2 Plate w/ Horiz. Peg Hole
    22%  2L Technic Cross-Block Connector
    22%  2x2 Studded Hub w/ Peg Hole
    22%  3L Technic Cross-Block Connector w/ Nibs
    22%  4x4x1 Cylinder Brick w/ 4 Peg Holes
    20%  8-Spoke Ship Steering Wheel w/ Peg
    19%  14L Flexible Ribbed Tube
    19%  9L Flexible Ribbed Tube
    18%  2L Technic Piston Rod w/ 2 Side Studs
    18%  2x2 FreeStyle Hub w/ Large Tires
    18%  2x2 FreeStyle Hub w/ Small Tires
    12%  #1 Technic Angle Joint (End)
    12%  #2 Technic Angle Joint (180 deg.)
    12%  #3 Technic Angle Joint (157.5 deg.)
    12%  #4 Technic Angle Joint (135 deg.)
    12%  #5 Technic Angle Joint (112.5 deg.)
    12%  #6 Technic Angle Joint (90 deg.)
    12%  Aquazone-Style Propellor
    12%  Peg-Hole Swivel w/ Magnet
    12%  3x3 Technic Pulley
    12%  6.5L Technic Shock Absorber
     8%  1x4 Plate w/ Tiny End Pegs
     8%  2x2 Plate w/ Tiny Gray Wheels
     8%  2x2 Plate w/ Tiny Side Pegs
     8%  2x2 Recessed Plate w/ Tiny Side Pegs
     8%  2x2 Springy Axle w/ Tiny Side Pegs
     8%  2L Technic Toggle Joint
     8%  4.5x4.5 Technic Steering Wheel
     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
     8%  5x5 FreeStyle Studded Propellor
     8%  5x5 Technic Hub w/ "20x30" Tire
     8%  5x5 Technic Hub w/ "49.6x28 VR" Tire
     8%  6x6 Webbed Radar Dish
     8%  8x8 Radar Dish
     7%  2x2 Plate w/ Tiny Side Peg
     5%  Dragon Arm (0 Pair)
     5%  10L Technic Gear-Plate w/ End Holes
     5%  19L/30L Crane Arm w/ 15 Top Studs
     5%  1x10 Plate w/ End Holes & Toothing
     5%  1x4 Plate w/ End Holes & Toothing
     5%  1x5 Plate w/ End Holes & Toothing
     5%  1x6 Plate w/ End Holes & Toothing
     5%  1x8 Plate w/ End Holes & Toothing
     5%  2x2 Cylinder Brick w/ 6 Fan Blades
     5%  2x2 Pegged Plate Gray 3-Blade Props
     5%  2x3 Round-End Plate w/ Hole
     5%  2x8x1.3 Car Chassis w/ 4 Tiny Pegs
     5%  4x10x1.6 Car Chassis w/ 4 Tiny Pegs
     5%  5x5 Technic Hub w/ "68.8x40 Q" Tire
     5%  8L Technic Gear-Plate w/ End Holes
     4%  3x3x2 10+10-Tooth Tank-Tread Hub
     2%  2x5x2.3 Z-Bracket w/ Plate Holes
     2%  6x10 4-Hole Front-End Loader Bucket
     1%  Wingless Dragon