A__g_H_C___R
_MCMgMCMgMg_
_gKCJgKCJC__
CMCMCMCMgM__
_gKCKgKCJC__
_MgMgMgMCMC_
_gJCIgJgKC__
gMCMCMCMgM__
_C_L___[____
_[_[_______P