GGGGGGGGb  dP     dP   dP     dP    GGGGGGGGb 
  GG         GG     GG   GG     GG    GG        
 aGGaaaa     GGaaaaaGGa  GGaaaaaGGa  aGGaaaa    
  GG         GG     GG   GG     GG    GG        
  GG         GG     GG   GG     GG    GG        
  GGGGGGGGP  dP     dP   dP     dP    dP