h=0.04;
Point(1) = {0, 0, 0, h};
Point(2) = {1, 0, 0, h};
Point(3) = {0, 1, 0, h};
Point(4) = {1, 1, 0, h};
Point(5) = {0.45, 0.2, 0, h};
Point(6) = {0.55, 0.2, 0, h};
Point(7) = {0.45, 0.3, 0, h};
Point(8) = {0.55, 0.3, 0, h};
Point(9) = {0.7, 0.7, 0, h};
Point(10) = {0.8, 0.7, 0, h};
Point(11) = {0.7, 0.8, 0, h};
Point(12) = {0.8, 0.8, 0, h};
Line(1) = {1, 3};
Line(2) = {3, 4};
Line(3) = {4, 2};
Line(4) = {2, 1};
Line(5) = {5, 6};
Line(6) = {6, 8};
Line(7) = {8, 7};
Line(8) = {7, 5};
Line(9) = {9, 10};
Line(10) = {10, 12};
Line(11) = {12, 11};
Line(12) = {11, 9};
Line Loop(14) = {7, 8, 5, 6};
Plane Surface(14) = {14};
Line Loop(16) = {11, 12, 9, 10};
Plane Surface(16) = {16};
Line Loop(18) = {7, 8, 5, 6, -10, -9, -12, -11, -4, -3, -2, -1};
Plane Surface(18) = {18};
Physical Line(999) = {1, 2, 3, 4};
Physical Surface(10001) = {14};
Physical Surface(20002) = {16};
Physical Surface(30003) = {18};
