C21221212121211331322132313132313132313232233132313223313231323311   >>    C2122121212121133132213231313231313231323223313231322331323132331   <<    C21221212121211331322132313132313132313232233132313223313231323313   >>      C21221212121211331322132313132313132313232233132313223313231323312   >>