Point(1) = {-1, -1, -1, 1.0};
Point(2) = {1, -1, -1, 1.0};
Point(3) = {1, 1, -1, 1.0};
Point(4) = {-1, 1, -1, 1.0};
Point(5) = {-1, -1, 1, 1.0};
Point(6) = {1, -1, 1, 1.0};
Point(7) = {1, 1, 1, 1.0};
Point(8) = {-1, 1, 1, 1.0};
Line(1) = {1, 2};
Line(2) = {1, 5};
Line(3) = {5, 6};
Line(4) = {2, 6};
Line(5) = {2, 3};
Line(6) = {3, 7};
Line(7) = {6, 7};
Line(8) = {3, 4};
Line(9) = {7, 8};
Line(10) = {1, 4};
Line(11) = {5, 8};
Line(12) = {4, 8};
Line Loop(13) = {8, 12, -9, -6}; 
Plane Surface(14) = {13};
Line Loop(15) = {7, 9, -11,3}; 
Plane Surface(16) = {15};
Line Loop(17) = {5, 6, -7, -4}; 
Plane Surface(18) = {17};
Line Loop(19) = {-1, 2, 3, -4}; 
Plane Surface(20) = {19};
Line Loop(21) = {5, 8, -10, 1}; 
Plane Surface(22) = {21};
Line Loop(23) = {-11, -2, 10, 12}; 
Plane Surface(24) = {23};
Surface Loop(25) = {18, 22, 14, 16, 20, 24};
Volume(26) = {25};
Transfinite Line {5} = 3 Using Progression 1;
Transfinite Line {6} = 3 Using Progression 1;
Transfinite Line {7} = 3 Using Progression 1;
Transfinite Line {4} = 3 Using Progression 1;
Transfinite Line {10} = 3 Using Progression 1;
Transfinite Line {12} = 3 Using Progression 1;
Transfinite Line {11} = 3 Using Progression 1;
Transfinite Line {2} = 3 Using Progression 1;
Transfinite Line {8} = 3 Using Progression 1;
Transfinite Line {9} = 3 Using Progression 1;
Transfinite Line {3} = 3 Using Progression 1;
Transfinite Line {1} = 3 Using Progression 1;
Transfinite Surface {18};
Transfinite Surface {14};
Transfinite Surface {22};
Transfinite Surface {20};
Transfinite Surface {16};
Transfinite Surface {24};
Recombine Surface {18};
Recombine Surface {14};
Recombine Surface {22};
Recombine Surface {20};
Recombine Surface {16};
Recombine Surface {24};
Transfinite Volume{26} = {1, 2, 3, 4, 5, 6, 7, 8};
