Step 1: Prepare the tracks and parts as per the above picture.

Step 2: Prepare 4 "J" tracks and connect them together.
Repeat step 1 to setp 2 one more time to develop 2 sets of 4 x "J" tracks.

Step 3: Connect the 1st set of 4 x "J" tracks to another set of "J" tracks as per photo above.

Step 4: Recognize the direction of 8 x "J" tracks as per photo shown above.

Step 5: Recognize the design & direction of track "I" as per the picture above.
(Take note: There are 3 holes on the edge and the diamond engraving on the
surface of the convex single lane track as per the photo shown above.)