pattern8: Shape of a fan

• 27th April
  
  • My sketch
    
  • My prediction
    
  • How I put them down
    

• 28th April
  They seems to have grown straight ahead and changed direction at a dead end.
  

• 30th April
  It grew so much.
  They circled around and came back to the first point.
  

• 2th May