C1111233131211111211113313331333133313331333133313331333133313113313232313111   >>    C111123313121111121111331333133313331333133313331333133313331311331323231311   <<    C1111233131211111211113313331333133313331333133313331333133313113313232313113   >>      C1111233131211111211113313331333133313331333133313331333133313113313232313112   >>