1 for (int c4 = 1; c4 <= n; c4 += 1)
2   s2(c4);
3 for (int c1 = 1; c1 < n; c1 += 1) {
4   for (int c4 = 0; c4 < n - c1; c4 += 1)
5     s0(c1, n - c4);
6   for (int c3 = 0; c3 < n - c1; c3 += 1)
7     for (int c4 = c1 + 1; c4 <= n; c4 += 1)
8       s1(c1, n - c3, c4);
9 }
10 for (int c1 = 1; c1 <= n; c1 += 1) {
11   s4(c1);
12   for (int c3 = c1 + 1; c3 <= n; c3 += 1)
13     s3(c3, c1);
14 }
15