C121212123112323223313233313131323331323221313232233132313233231111   >>    C12121212311232322331323331313132333132322131323223313231323323111   <<    C121212123112323223313233313131323331323221313232233132313233231113   >>      C121212123112323223313233313131323331323221313232233132313233231112   >>