C2221232323213331311331333133313231333132313331333322123221132232221   >>    C222123232321333131133133313331323133313231333133332212322113223222   <<    C2221232323213331311331333133313231333132313331333322123221132232223   >>      C2221232323213331311331333133313231333132313331333322123221132232222   >>