group() {
																					minkowski(convexity = 0) {
																						circle($fn = 50, $fa = 12, $fs = 2, r = 5.5);
																						offset(r = -15.5, $fn = 50, $fa = 12, $fs = 2) {
																							polygon(points = [[0, 0], [176, 0], [88, 88]], paths = [[0, 1, 2]], convexity = 1);
																						}
																					}
																				}