  We study the formation of generic singularities of mean curvature flow by
combining the different approaches, specifically the methods in studying blowup
of nonlinear heat equations, the techniques used by the author and the
collaborators for mean curvature flow, and these invented by Colding and
Minicozzi. We study the solution in a neighborhood of the blowup point, in some
generic regimes, we find the key parameters take favorable signs and have sharp
decay rates. We provide the remainder estimates in different norms.
