C1111233131211111211113313331333133313232321333133313331333131133113311111   >>    C111123313121111121111331333133313331323232133313331333133313113311331111   <<    C1111233131211111211113313331333133313232321333133313331333131133113311113   >>      C1111233131211111211113313331333133313232321333133313331333131133113311112   >>