  We propose a mass matrix model that gives a unified description of quark and
lepton with the same texture form based on a flavor 2 <-> 3 symmetry. The model
is in contrast with the conventional picture that the mass matrix forms in the
quark sector will take somewhat different structures from those in the lepton
sector. By investigating possible types of assignment for masses, we find that
our quark mass matrices can lead to small CKM quark mixings which are
consistent with experimental values. We also find some
phase-parameter-independent relations among CKM quark mixing matrix elements.
