1*5971e316Smrg for (int c0 = 1; c0 < M; c0 += 1) 2*5971e316Smrg for (int c1 = c0 + 1; c1 <= M; c1 += 1) { 3*5971e316Smrg for (int c3 = 1; c3 < c0; c3 += 1) 4*5971e316Smrg S1(c0, c3, c1); 5*5971e316Smrg for (int c3 = c0 + 1; c3 <= M; c3 += 1) 6*5971e316Smrg S2(c0, c3, c1); 7*5971e316Smrg } 8