C21221212121211331322132313132313231313232233132313223313231323231323321   >>    C2122121212121133132213231313231323131323223313231322331323132323132332   <<    C21221212121211331322132313132313231313232233132313223313231323231323323   >>      C21221212121211331322132313132313231313232233132313223313231323231323322   >>