C2221232323213331311331333133313231333132313231333113223212213232111   >>    C222123232321333131133133313331323133313231323133311322321221323211   <<    C2221232323213331311331333133313231333132313231333113223212213232113   >>      C2221232323213331311331333133313231333132313231333113223212213232112   >>