C13112133313331323321333133313331333133313331311331323221121133132332223321   >>    C1311213331333132332133313331333133313331333131133132322112113313233222332   <<    C13112133313331323321333133313331333133313331311331323221121133132332223323   >>      C13112133313331323321333133313331333133313331311331323221121133132332223322   >>