C121212123112323223313132322331323331323132322231323132313221211   >>    C12121212311232322331313232233132333132313232223132313231322121   <<    C121212123112323223313132322331323331323132322231323132313221213   >>      C121212123112323223313132322331323331323132322231323132313221212   >>