C11111333133313232233133313331333133313331311331333133331311321   >>    C1111133313331323223313331333133313331333131133133313333131132   <<    C11111333133313232233133313331333133313331311331333133331311323   >>      C11111333133313232233133313331333133313331311331333133331311322   >>