group() {
	difference() {
		group() {
			cube(size = [65, 28, 28], center = true);
		}
		group() {
			multmatrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
				render(convexity = 12) {
					difference() {
						group() {
							difference() {
								multmatrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 7.5], [0, 0, 0, 1]]) {
									cube(size = [60, 28, 14], center = true);
								}
								cube(size = [8, 32, 32], center = true);
							}
						}
						group() {
							multmatrix([[1, 0, 0, -14], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
								import(file = "example016.stl", layer = "", origin = [0, 0], scale = 1, convexity = 12, $fn = 0, $fa = 12, $fs = 2);
							}
						}
					}
				}
			}
			multmatrix([[1, 0, 0, 0], [0, 0, -1, 0], [0, 1, 0, 0], [0, 0, 0, 1]]) {
				render(convexity = 12) {
					difference() {
						group() {
							difference() {
								multmatrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 7.5], [0, 0, 0, 1]]) {
									cube(size = [60, 28, 14], center = true);
								}
								cube(size = [8, 32, 32], center = true);
							}
						}
						group() {
							multmatrix([[1, 0, 0, -14], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
								import(file = "example016.stl", layer = "", origin = [0, 0], scale = 1, convexity = 12, $fn = 0, $fa = 12, $fs = 2);
							}
						}
					}
				}
			}
			multmatrix([[1, 0, 0, 0], [0, -1, 0, 0], [0, 0, -1, 0], [0, 0, 0, 1]]) {
				render(convexity = 12) {
					difference() {
						group() {
							difference() {
								multmatrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 7.5], [0, 0, 0, 1]]) {
									cube(size = [60, 28, 14], center = true);
								}
								cube(size = [8, 32, 32], center = true);
							}
						}
						group() {
							multmatrix([[1, 0, 0, -14], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
								import(file = "example016.stl", layer = "", origin = [0, 0], scale = 1, convexity = 12, $fn = 0, $fa = 12, $fs = 2);
							}
						}
					}
				}
			}
			multmatrix([[1, 0, 0, 0], [0, 0, 1, 0], [0, -1, 0, 0], [0, 0, 0, 1]]) {
				render(convexity = 12) {
					difference() {
						group() {
							difference() {
								multmatrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 7.5], [0, 0, 0, 1]]) {
									cube(size = [60, 28, 14], center = true);
								}
								cube(size = [8, 32, 32], center = true);
							}
						}
						group() {
							multmatrix([[1, 0, 0, -14], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
								import(file = "example016.stl", layer = "", origin = [0, 0], scale = 1, convexity = 12, $fn = 0, $fa = 12, $fs = 2);
							}
						}
					}
				}
			}
		}
	}
}