Evolution of the energy generation rate by nuclear burning for each model indicated by labels. The rate becomes higher toward the core collapse. There are some local peaks for each model around ten years, five years, and one year before core collapse. We adopted the peaks at 11.2 years before core collapse (model RSG) and at 7.2 years before core collapse (BSG) as initial models for our calculations. These peaks correspond to the core neon burning phase.