Point(5) = {0, 0, 1, 0.1};
Point(6) = {0, 1, 1, 0.1};
Point(7) = {1, 1, 1, 0.1};
Point(8) = {1, 0, 1, 0.1};
Line(2) = {6,5} ;
Line(6) = {8,7} ;
Line(9) = {5,8} ;
Line(12) = {7,6} ;

Line Loop(6) = {-2,-12,-6,-9};
Plane Surface(6) = {6};
