C13112133313331323321333133313331333133313331311331323233231323231   >>    C1311213331333132332133313331333133313331333131133132323323132323   <<    C13112133313331323321333133313331333133313331311331323233231323233   >>      C13112133313331323321333133313331333133313331311331323233231323232   >>