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group() {
sphere($fn = 0, $fa = 12, $fs = 1, r = 5);
multmatrix([[1, 0, 0, 0], [0, 1, 0, 12], [0, 0, 1, 0], [0, 0, 0, 1]]) {
sphere($fn = 0, $fa = 5, $fs = 0.5, r = 5);
}
multmatrix([[1, 0, 0, 12], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
sphere($fn = 0, $fa = 12, $fs = 1, r = 6);
}
multmatrix([[1, 0, 0, 12], [0, 1, 0, 12], [0, 0, 1, 0], [0, 0, 0, 1]]) {
sphere($fn = 5, $fa = 12, $fs = 1, r = 6);
}
}
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