else distDNA_TsTv(x, n, s, d, 1, 0); break;
case 15 : if (pairdel) distDNA_TsTv(x, n, s, d, 0, 1);
else distDNA_TsTv(x, n, s, d, 0, 0); break;
else distDNA_TsTv(x, n, s, d, 1, 0); break;
case 15 : if (pairdel) distDNA_TsTv(x, n, s, d, 0, 1);
else distDNA_TsTv(x, n, s, d, 0, 0); break;