C121212123112323223313132322331323132313132323213231323132313231311   >>    C12121212311232322331313232233132313231313232321323132313231323131   <<    C121212123112323223313132322331323132313132323213231323132313231313   >>      C121212123112323223313132322331323132313132323213231323132313231312   >>