  If the sterile neutrino mass matrix in an otherwise conventional see-saw
model has a rank less than the number of flavors, it is possible to produce
pseudo-Dirac neutrinos. For the rank 1 case, 3+2 scenarios devolve naturally,
as we show by example. Additionally, we find that the lower rank see-saw
suppresses some mass differences, so that small mass differences do not require
that the individual masses of each neutrino must also be small.
