C1212121231123232233132333131313233313232111323132313231323132322111   >>    C121212123112323223313233313131323331323211132313231323132313232211   <<    C1212121231123232233132333131313233313232111323132313231323132322113   >>      C1212121231123232233132333131313233313232111323132313231323132322112   >>