{
  S2(1, 0, 1, 0);
  S4(1, 0, 1, 0);
  S3(2, 0, 1, 1);
  S4(2, 0, 1, 1);
  for (int c0 = 3; c0 <= 10; c0 += 1) {
    if (c0 % 3 == 0) {
      S1(c0, c0 / 3, c0 / 3, c0 / 3);
    } else if ((c0 - 1) % 3 == 0) {
      S2(c0, (c0 - 1) / 3, (c0 + 2) / 3, (c0 - 1) / 3);
    } else
      S3(c0, (c0 - 2) / 3, (c0 + 1) / 3, (c0 + 1) / 3);
    S4(c0, c0 / 3, (c0 - 1) / 3 + 1, c0 - (c0 - 1) / 3 - c0 / 3 - 1);
  }
}