C21221212121211331322132313132313231313232233132313223313231323323222311   >>    C2122121212121133132213231313231323131323223313231322331323132332322231   <<    C21221212121211331322132313132313231313232233132313223313231323323222313   >>      C21221212121211331322132313132313231313232233132313223313231323323222312   >>