group() {
	multmatrix([[1, 0, 0, 22], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		linear_extrude(height = 20, center = false, convexity = 1, scale = [1, 1], $fn = 0, $fa = 12, $fs = 2) {
			projection(cut = true, convexity = 0) {
				multmatrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 9], [0, 0, 0, 1]]) {
					sphere($fn = 0, $fa = 12, $fs = 2, r = 10);
				}
			}
		}
	}
	multmatrix([[1, 0, 0, 44], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		linear_extrude(height = 20, center = false, convexity = 1, scale = [1, 1], $fn = 0, $fa = 12, $fs = 2) {
			projection(cut = true, convexity = 0) {
				multmatrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 7], [0, 0, 0, 1]]) {
					sphere($fn = 0, $fa = 12, $fs = 2, r = 10);
				}
			}
		}
	}
}