  We look for predictive flavour patterns of the effective Majorana neutrino
mass matrix that are compatible with current neutrino oscillation data. Our
search is based on the assumption that the neutrino mass matrix contains equal
elements and a minimal number of parameters, in the flavour basis where the
charged lepton mass matrix is diagonal and real. Three unique patterns that can
successfully explain neutrino observables at the $3\sigma$ confidence level
with just three physical parameters are presented. Neutrino textures described
by four and five parameters are also studied. The predictions for the lightest
neutrino mass, the effective mass parameter in neutrinoless double beta decays
and the CP-violating phases in the leptonic mixing are given.
