  We study the dynamical effect of strange quark mass as well as kinematical
one on the color-flavor unlocking transition using a NJL model. Paying a
special attention to the multiplicity of gap parameters, we derive an exact
formula of the effective potential for 5-gap parameters. Based on this, we
discuss that the unlocking transition might be of second order rather than of
first order as is predicted by a simple kinematical criterion for the
unlocking.
