C121212123112323223313132322331323331323132322231323132313232211331   >>    C12121212311232322331313232233132333132313232223132313231323221133   <<    C121212123112323223313132322331323331323132322231323132313232211333   >>      C121212123112323223313132322331323331323132322231323132313232211332   >>