C121212123112323223313233313131323331323211132313231323132322111   >>    C12121212311232322331323331313132333132321113231323132313232211   <<    C121212123112323223313233313131323331323211132313231323132322113   >>      C121212123112323223313233313131323331323211132313231323132322112   >>