Point(1) = {0,0,0,20};
Point(2) = {100,0,0,20};
Point(3) = {100,60,0,20};
Point(4) = {0,60,0,20};
Point(5) = {100,30,0,20};
Point(6) = {0,30,0,20};
Point(7) = {0,15,0,10};
Point(8) = {100,15,0,10};
Line(1) = {1,2};
Line(3) = {3,4};
Circle(5) = {2,5,3};
Circle(6) = {4,6,1};
Circle(7) = {7,6,7};
Circle(8) = {8,5,8};
Line Loop(9) = {6,1,5,3};
Plane Surface(10) = {9};
Ruled Surface(11) = {9};
Ruled Surface(12) = {9};
Extrude Surface {12, {0,0,40}};
Extrude Line {8, {0,0,40}};
Extrude Line {7, {0,0,40}};
Surface Loop(43) = {25,10,21,34,29,33};
Volume(44) = {43};
