C1111233131211111211113313331333133313232313331333133313331312312132321   >>    C111123313121111121111331333133313331323231333133313331333131231213232   <<    C1111233131211111211113313331333133313232313331333133313331312312132323   >>      C1111233131211111211113313331333133313232313331333133313331312312132322   >>