Point(1) = {0,0,0,0.1};
Point(2) = {1.0,0,0,0.1};
Point(3) = {-1.0,0,0,0.1};
Point(4) = {0,1.0,0,0.1};
Point(5) = {0,-1.0,0,0.1};
Circle(1) = {2,1,4};
Circle(2) = {4,1,3};
Circle(3) = {3,1,5};
Circle(4) = {5,1,2};
Line Loop(5) = {3,4,1,2};
Plane Surface(6) = {5};

Physical Line('BOUNDARY1-1') = {1};
Physical Line('BOUNDARY2-1') = {2};
Physical Line('BOUNDARY3-1') = {3};
Physical Line('BOUNDARY4-1') = {4};
Physical Surface('DOMAIN1') = {6};

Characteristic Length {5,2,4,3,1} = 0.9;
// Transfinite Surface {6} = {5,2,4,3};
Recombine Surface {6};

