begin_lib 0.001
begin_cell {B}
boundary 1 2 {-100 200} {100 400} {300 200} {-100 200}
boundary 1 2 {-100 600} {100 800} {300 600} {-100 600}
end_cell
begin_cell {A}
boundary 1 2 {-100 200} {-100 400} {100 200} {-100 200}
boundary 1 2 {-100 600} {-100 800} {100 600} {-100 600}
end_cell
end_lib