C2221232323213331311331333133313231333132313231333113221212121311   >>    C222123232321333131133133313331323133313231323133311322121212131   <<    C2221232323213331311331333133313231333132313231333113221212121313   >>      C2221232323213331311331333133313231333132313231333113221212121312   >>