C21221212121211331322132313132313231313232233132313223313232211213231   >>    C2122121212121133132213231313231323131323223313231322331323221121323   <<    C21221212121211331322132313132313231313232233132313223313232211213233   >>      C21221212121211331322132313132313231313232233132313223313232211213232   >>