Hogwarts Express

What there is most of

• Plate Round 1 x 1 with Open Stud · Black×7
• Plate Special 1 x 2 with Door Rail · Red×4
• Train Wheel Small, hole notched for wheels holder pin · Black×4
• Tile 1 x 1 with Groove · Red×3
• Bracket 1 x 2 - 1 x 2 · Black×2
• Brick Curved 2 x 2, Two Top Studs · Red×2
• Brick Sloped 30° 1 x 2 x 2/3 · Black×2
• Brick Special 1 x 1 with Headlight · Red×2
• Plate 1 x 2 · Red×2
• Plate 2 x 4 · Black×2
• Plate Special 2 x 2 with Wheel Holders · Black×2
• Tile 1 x 1 with Groove · Trans-Clear×2
• Bracket 1 x 2 - 1 x 2 Inverted · Red×1
• Brick Round 2 x 2 [Grill] · Black×1
• Dish 2 x 2 Inverted [Radar] · Black×1
• Panel 1 x 2 x 1 [Rounded Corners] · Red×1
• Plate 2 x 6 · Red×1
• Plate Round 2 x 2 with Rounded Bottom [Boat Stud] · Light Bluish Gray×1
• Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Solid Anti-stud] · Black×1
• Plate Special Round 2 x 2 with Center Stud (Jumper Plate) · Dark Bluish Gray×1

The twenty most numerous parts, longest bar first. Start a checklist to see all 21 part types and tick them off as you find them.