C2221232323213331311331333133313231323133313231123312331123121311   >>    C222123232321333131133133313331323132313331323112331233112312131   <<    C2221232323213331311331333133313231323133313231123312331123121313   >>      C2221232323213331311331333133313231323133313231123312331123121312   >>