NN   NNNNNNNNNNNN        
NNNNNNNNNNNNN    NNNNNNNNNNN     NNNNNN N    NN    N NNNNN  
NNN         NN   NN       NN    NN    NN     NN       NNN   
 NN         NNN  NN    N       NN      NN    NN       NNNNNN
 NN         NNN  NNNNNNN      NNNNNNNNNNNN   NN       NNNNNN
NNN         NN   NN    N     NNN        NNN  NN       NNN   
NNNNNNNNNNNNN    NN      NN  NNN         NNNNNNN      NNN   
                 NNNNNNNNNN NNNN          NNNNNNN    NNNNN