C2221232323213331311331333133313331323132313331333223312232311332321   >>    C222123232321333131133133313331333132313231333133322331223231133232   <<    C2221232323213331311331333133313331323132313331333223312232311332323   >>      C2221232323213331311331333133313331323132313331333223312232311332322   >>