C2221232323213331311331333133313331323132313331333223312232311132313221   >>    C222123232321333131133133313331333132313231333133322331223231113231322   <<    C2221232323213331311331333133313331323132313331333223312232311132313223   >>      C2221232323213331311331333133313331323132313331333223312232311132313222   >>