C2221232323213331311331333133313231333132313232131133311231211221   >>    C222123232321333131133133313331323133313231323213113331123121122   <<    C2221232323213331311331333133313231333132313232131133311231211223   >>      C2221232323213331311331333133313231333132313232131133311231211222   >>