Universal seesaw mechanism?

The idea that fermions acquire their masses via a universal seesaw mechanism can provide a plausible explanation for the mass hier- archy ${\mathrm{m}}_{\mathrm{e}}$,u,d≃${10}^{\mathrm{-}4}$ ${\mathrm{M}}_{\mathrm{W}}$. A minimal SU(3${)}_{\mathrm{C}}$⊗SU(2${)}_{\mathrm{L}}$ ⊗SU(2${)}_{\mathrm{R}}$⊗U(1${)}_{\mathrm{B}\mathrm{-}\mathrm{L}}$ grand unifiable realization is presented. Whereas the fermionic representation is enlarged to include SU(2${)}_{\mathrm{L}}$⊗SU(2${)}_{\mathrm{R}}$ singlets, the Higgs system contains none of the conventional scalars of left-right-symmetric models. An alternative way to account for the superlightness of neutrinos emerges.