C2221232323213331311331333133313231333132313231333113223211111122221   >>    C222123232321333131133133313331323133313231323133311322321111112222   <<    C2221232323213331311331333133313231333132313231333113223211111122223   >>      C2221232323213331311331333133313231333132313231333113223211111122222   >>