group() {
	difference() {
		sphere($fn = 0, $fa = 12, $fs = 2, r = 10);
%		cylinder($fn = 0, $fa = 12, $fs = 2, h = 30, r1 = 6, r2 = 6, center = true);
%		group() {
			cube(size = [25, 6, 3], center = true);
		}
	}
%	multmatrix([[1, 0, 0, 0], [0, 1, 0, -9], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		difference() {
			color([0, 0.501961, 0, 1]) {
				cube(size = [10, 4, 10], center = true);
			}
			color([1, 0, 0, 1]) {
				multmatrix([[1, 0, 0, 0], [0, 1, 0, -2], [0, 0, 1, 0], [0, 0, 0, 1]]) {
					sphere($fn = 0, $fa = 12, $fs = 2, r = 3);
				}
			}
		}
	}
%	multmatrix([[1, 0, 0, 13], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		difference() {
			sphere($fn = 0, $fa = 12, $fs = 2, r = 10);
			cylinder($fn = 0, $fa = 12, $fs = 2, h = 30, r1 = 6, r2 = 6, center = true);
			group() {
				cube(size = [25, 6, 3], center = true);
			}
		}
		multmatrix([[1, 0, 0, 0], [0, 1, 0, -9], [0, 0, 1, 0], [0, 0, 0, 1]]) {
			difference() {
				color([0, 0.501961, 0, 1]) {
					cube(size = [10, 4, 10], center = true);
				}
				color([1, 0, 0, 1]) {
					multmatrix([[1, 0, 0, 0], [0, 1, 0, -2], [0, 0, 1, 0], [0, 0, 0, 1]]) {
						sphere($fn = 0, $fa = 12, $fs = 2, r = 3);
					}
				}
			}
		}
	}
	multmatrix([[1, 0, 0, 26], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		difference() {
			sphere($fn = 0, $fa = 12, $fs = 2, r = 10);
			cylinder($fn = 0, $fa = 12, $fs = 2, h = 30, r1 = 6, r2 = 6, center = true);
			group() {
				cube(size = [25, 6, 3], center = true);
			}
		}
%		multmatrix([[1, 0, 0, 0], [0, 1, 0, -9], [0, 0, 1, 0], [0, 0, 0, 1]]) {
			difference() {
				color([0, 0.501961, 0, 1]) {
					cube(size = [10, 4, 10], center = true);
				}
				color([1, 0, 0, 1]) {
					multmatrix([[1, 0, 0, 0], [0, 1, 0, -2], [0, 0, 1, 0], [0, 0, 0, 1]]) {
						sphere($fn = 0, $fa = 12, $fs = 2, r = 3);
					}
				}
			}
		}
	}
}