chip [ 950 , 650 ]
cell 1  pos  [ 000 , 050 ] size [ 400 , 350 ]
  name F1 side n offset 200
cell 2  pos  [ 550 , 050 ] size [ 400 , 350 ]
  name F2 side n offset 100
cell 3  pos  [ 000 , 550 ] size [ 950 , 100 ]
  name B3 side s offset 100
cell 4  pos  [ 000 , 000 ] size [ 950 , 50 ]
  name B2 side n offset 450
net tie B2 tie B3
net tie F1 tie F2
end