C21221212121211331322132313132313132313232233132313223313113312311   >>    C2122121212121133132213231313231313231323223313231322331311331231   <<    C21221212121211331322132313132313132313232233132313223313113312313   >>      C21221212121211331322132313132313132313232233132313223313113312312   >>