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group() {
group() {
difference() {
union() {
cube(size = [30, 30, 30], center = true);
cube(size = [40, 15, 15], center = true);
cube(size = [15, 40, 15], center = true);
cube(size = [15, 15, 40], center = true);
}
union() {
cube(size = [50, 10, 10], center = true);
cube(size = [10, 50, 10], center = true);
cube(size = [10, 10, 50], center = true);
}
}
}
}
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