C1311213331311331312111113331333133313331322321111133313232213111   >>    C131121333131133131211111333133313331333132232111113331323221311   <<    C1311213331311331312111113331333133313331322321111133313232213113   >>      C1311213331311331312111113331333133313331322321111133313232213112   >>