1for (int c0 = 2; c0 <= 8; c0 += 2) {2 if ((c0 + 2) % 4 == 0) {3 for (int c1 = 1; c1 <= 9; c1 += 1)4 s1(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