C11111333133313232233133313331333133313331311331333133313131133121   >>    C1111133313331323223313331333133313331333131133133313331313113312   <<    C11111333133313232233133313331333133313331311331333133313131133123   >>      C11111333133313232233133313331333133313331311331333133313131133122   >>