C121212123112323223313233313131323331323221313232233132313232111   >>    C12121212311232322331323331313132333132322131323223313231323211   <<    C121212123112323223313233313131323331323221313232233132313232113   >>      C121212123112323223313233313131323331323221313232233132313232112   >>