1 for (int c0 = 2; c0 <= 10; c0 += 3) { 2 S1(c0, (c0 + 1) / 3, (c0 + 1) / 3, 2, (c0 - 2) / 3); 3 S2(c0, (c0 + 1) / 3, (c0 + 1) / 3, 2, (c0 - 2) / 3); 4 S3(c0, (c0 + 1) / 3, (c0 + 1) / 3, 2, (c0 - 2) / 3); 5 } 6