C1111233131211111211113313331333133313331333133313331333133313233211113331   >>    C111123313121111121111331333133313331333133313331333133313331323321111333   <<    C1111233131211111211113313331333133313331333133313331333133313233211113333   >>      C1111233131211111211113313331333133313331333133313331333133313233211113332   >>