C1111233131211111211113313331333133313331333133313331333133313232213113331   >>    C111123313121111121111331333133313331333133313331333133313331323221311333   <<    C1111233131211111211113313331333133313331333133313331333133313232213113333   >>      C1111233131211111211113313331333133313331333133313331333133313232213113332   >>