C1111233131211111211113313331333133313331333133313331333133313233211113321   >>    C111123313121111121111331333133313331333133313331333133313331323321111332   <<    C1111233131211111211113313331333133313331333133313331333133313233211113323   >>      C1111233131211111211113313331333133313331333133313331333133313233211113322   >>