1for (int c0 = 1; c0 <= 8; c0 += 1) {
2  if (c0 >= 2) {
3    if (c0 <= 6)
4      for (int c1 = 0; c1 < c0 - 1; c1 += 1)
5        s1(c0, c1);
6    for (int c1 = c0 - 1; c1 <= 4; c1 += 1) {
7      s1(c0, c1);
8      s0(c0, c1);
9    }
10    for (int c1 = max(5, c0 - 1); c1 <= 7; c1 += 1)
11      s0(c0, c1);
12  } else {
13    for (int c1 = 0; c1 <= 7; c1 += 1)
14      s0(1, c1);
15  }
16}
17