  We construct a realistic model based on SUSY SO(10) with U(2) flavor
symmetry. In contrast to the commonly used effective operator approach,
$126-$dimensional Higgses are used to construct the Yukawa sector. R-parity
symmetry is thus preserved at low energies. The Dirac and right-handed Majorana
mass matrices in our model have very small mixing, and they combine with the
seesaw mechanism resulting in a large leptonic mixing. The symmetric mass
textures arising from the left-right symmetry breaking chain of SO(10) give
rise to very good predictions; 15 masses (including 3 right-handed Majorana
neutrino masses) and 6 mixing angles are predicted by 11 parameters. Both the
vacuum oscillation and LOW solutions are favored for the solar neutrino
problem.
