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