C2221232323213331311331333133313231333132313331333121313232321221123123231   >>    C222123232321333131133133313331323133313231333133312131323232122112312323   <<    C2221232323213331311331333133313231333132313331333121313232321221123123233   >>      C2221232323213331311331333133313231333132313331333121313232321221123123232   >>