if (N >= 1) {

  S1(0);

  if (N == 1) {

    for (int c3 = 0; c3 < M; c3 += 1)

      S2(0, c3);

    S3(0);

    for (int c3 = 0; c3 < M; c3 += 1)

      S4(0, c3);

    S10(0);

    S5(0);

  } else {

    for (int c3 = 0; c3 < M; c3 += 1)

      S2(0, c3);

    S3(0);

    for (int c3 = 0; c3 < M; c3 += 1)

      S4(0, c3);

    S10(0);

    S1(1);

    S5(0);

  }

  for (int c1 = 2; c1 < N; c1 += 1) {

    for (int c3 = c1 - 1; c3 < N; c3 += 1) {

      S6(c1 - 2, c3);

      for (int c5 = c1 - 2; c5 < M; c5 += 1)

        S7(c1 - 2, c3, c5);

      S8(c1 - 2, c3);

      for (int c5 = c1 - 2; c5 < M; c5 += 1)

        S9(c1 - 2, c3, c5);

    }

    for (int c3 = c1 - 1; c3 < M; c3 += 1)

      S2(c1 - 1, c3);

    S3(c1 - 1);

    for (int c3 = c1 - 1; c3 < M; c3 += 1)

      S4(c1 - 1, c3);

    S10(c1 - 1);

    S1(c1);

    S5(c1 - 1);

  }

  if (N >= 2) {

    S6(N - 2, N - 1);

    for (int c5 = N - 2; c5 < M; c5 += 1)

      S7(N - 2, N - 1, c5);

    S8(N - 2, N - 1);

    for (int c5 = N - 2; c5 < M; c5 += 1)

      S9(N - 2, N - 1, c5);

    for (int c3 = N - 1; c3 < M; c3 += 1)

      S2(N - 1, c3);

    S3(N - 1);

    for (int c3 = N - 1; c3 < M; c3 += 1)

      S4(N - 1, c3);

    S10(N - 1);

    S5(N - 1);

  }

}