C11111333133313232233133313331333133313331311331333132311213331   >>    C1111133313331323223313331333133313331333131133133313231121333   <<    C11111333133313232233133313331333133313331311331333132311213333   >>      C11111333133313232233133313331333133313331311331333132311213332   >>