C21221212121211331322132313132313132313232233132313223313231323123211111   >>    C2122121212121133132213231313231313231323223313231322331323132312321111   <<    C21221212121211331322132313132313132313232233132313223313231323123211113   >>      C21221212121211331322132313132313132313232233132313223313231323123211112   >>