C21221212121211331322132313132313132313232233132313223313233231322331
  >>
   C2122121212121133132213231313231313231323223313231322331323323132233
  <<
   C21221212121211331322132313132313132313232233132313223313233231322333
  >>
 
 
 C21221212121211331322132313132313132313232233132313223313233231322332
  >>