chip [ 500 , 500 ]
cell 1  pos  [ 000 , 000 ] size [ 200 , 100 ]
  name D1 side n offset 150
cell 2  pos  [ 350 , 000 ] size [ 150 , 100 ]
  name F2 side w offset 050
  name D2 side n offset 050
cell 3  pos  [ 000 , 250 ] size [ 200 , 250 ]
  name D3 side e offset 150
cell 4  pos  [ 350 , 250 ] size [ 150 , 250 ]
  name F4 side w offset 100
net tie D1 tie D2 tie D3
net tie F2 tie F4
end