C2221232323213331311331333133313231333132313331333233113222221212311   >>    C222123232321333131133133313331323133313231333133323311322222121231   <<    C2221232323213331311331333133313231333132313331333233113222221212313   >>      C2221232323213331311331333133313231333132313331333233113222221212312   >>