lc = 1e-1;

Point(1) = {1, 0, 0, lc};
Point(2) = {2, 0,  0, lc} ;
Point(3) = {0, 1, 0, lc} ;
Point(4) = {1, 1, 0, lc} ;
Point(5) = {0, 2,  0, lc} ;
Point(6) = {1, 2, 0, lc} ;
Point(7) = {2, 2, 0, lc} ;

Line(1) = {1,2} ;
Line(2) = {3,4} ;
Line(3) = {5,6} ;
Line(4) = {6,7} ;

Line(5) = {1,4} ;
Line(6) = {4,6} ;
Line(7) = {2,7} ;
Line(9) = {5,3} ;

Line Loop(10) = {9, 2, 6, -3};
Plane Surface(11) = {10};

Line Loop(12) = {4, -7, -1, 5, 6};
Plane Surface(13) = {12};

