C11111333133313232233133313331333133313331311331333132311233111   >>    C1111133313331323223313331333133313331333131133133313231123311   <<    C11111333133313232233133313331333133313331311331333132311233113   >>      C11111333133313232233133313331333133313331311331333132311233112   >>