def METHOD_NAME():
    g = Grid( 6, 4)
    g.addTerminal( 'a', 0, 0)
    g.addTerminal( 'a', 2, 3)
    g.addTerminal( 'b', 3, 3)
    g.addTerminal( 'b', 5, 0)
    g.semanticSymmetric( 1, 1)
    for ly in ["metal2"]:
      g.s.emit_always( g.per_net_grid['!kor'][ly].var( g.idx(1,0)))