C2221232323213331311331333133313231333132313231333113223211121313311   >>    C222123232321333131133133313331323133313231323133311322321112131331   <<    C2221232323213331311331333133313231333132313231333113223211121313313   >>      C2221232323213331311331333133313231333132313231333113223211121313312   >>