group() {
	cylinder($fn = 0, $fa = 12, $fs = 2, h = 1, r1 = 1, r2 = 1, center = false);
	multmatrix([[1, 0, 0, -11], [0, 1, 0, -11], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		cylinder($fn = 0, $fa = 12, $fs = 2, h = 3, r1 = 5, r2 = 5, center = false);
	}
	multmatrix([[1, 0, 0, -11], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		cylinder($fn = 0, $fa = 12, $fs = 2, h = 5, r1 = 5, r2 = 5, center = false);
	}
	multmatrix([[1, 0, 0, -11], [0, 1, 0, 11], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		cylinder($fn = 0, $fa = 12, $fs = 2, h = 7, r1 = 5, r2 = 5, center = false);
	}
	multmatrix([[1, 0, 0, 11], [0, 1, 0, -11], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		cylinder($fn = 0, $fa = 12, $fs = 2, h = 5, r1 = 5, r2 = 1, center = false);
	}
	multmatrix([[1, 0, 0, 11], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		cylinder($fn = 0, $fa = 12, $fs = 2, h = 7, r1 = 5, r2 = 1, center = false);
	}
	multmatrix([[1, 0, 0, 11], [0, 1, 0, 11], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		cylinder($fn = 0, $fa = 12, $fs = 2, h = 9, r1 = 5, r2 = 1, center = false);
	}
	multmatrix([[1, 0, 0, 22], [0, 1, 0, -11], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		cylinder($fn = 0, $fa = 12, $fs = 2, h = 5, r1 = 1, r2 = 5, center = false);
	}
	multmatrix([[1, 0, 0, 22], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		cylinder($fn = 0, $fa = 12, $fs = 2, h = 7, r1 = 1, r2 = 5, center = false);
	}
	multmatrix([[1, 0, 0, 22], [0, 1, 0, 11], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		cylinder($fn = 0, $fa = 12, $fs = 2, h = 9, r1 = 1, r2 = 5, center = false);
	}
	multmatrix([[1, 0, 0, 33], [0, 1, 0, -11], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		cylinder($fn = 0, $fa = 12, $fs = 2, h = 5, r1 = 5, r2 = 5, center = false);
	}
	multmatrix([[1, 0, 0, 33], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		cylinder($fn = 0, $fa = 12, $fs = 2, h = 7, r1 = 5, r2 = 5, center = false);
	}
	multmatrix([[1, 0, 0, 33], [0, 1, 0, 11], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		cylinder($fn = 0, $fa = 12, $fs = 2, h = 9, r1 = 5, r2 = 5, center = false);
	}
}