1for (int c0 = 1; c0 <= 9; c0 += 1) {
2  if ((c0 + 1) % 2 == 0) {
3    for (int c1 = 1; c1 <= 9; c1 += 1)
4      s0(c1, c0);
5  } else {
6    for (int c1 = 1; c1 <= 9; c1 += 1) {
7      s0(c1, c0);
8      s1(c1, c0);
9    }
10  }
11}
12