Varianten: 2,3 x 2,3 m; 3,0 x 3,0 m; 4,5 x 3,0 m; 6,0 x 3,0 m; 6,0 x 6,0 m (sechseck); 4,0 x 4,0 m; 6,0 x 3,0 m; 5,0 x 5,0 m; 8,0 x 4,0 m