Builder and Traffic Light

What there is most of

• Bar 1 x 4 x 2 with Studs · Yellow×1
• Brick Special 1 x 2 x 2/3 with Studs on Sides · Black×1
• Plate 4 x 4 · Reddish Brown×1
• Plate Round 1 x 1 with Solid Stud · Trans-Green×1
• Plate Round 1 x 1 with Solid Stud · Trans-Red×1
• Plate Special 1 x 1 with Tooth · Black×1
• Tile 1 x 2 with Groove · Trans-Orange×1
• Tile Special 2 x 2 with Bar, Hollow Stud with Stop Ring (Flag Pole) · Light Bluish Gray×1
• Tool Jackhammer / Motor Hammer · Dark Bluish Gray×1

The twenty most numerous parts, longest bar first. Start a checklist to see all 9 part types and tick them off as you find them.