C1111233131211111211113313331333133313221211113313331333133313332112331   >>    C111123313121111121111331333133313331322121111331333133313331333211233   <<    C1111233131211111211113313331333133313221211113313331333133313332112333   >>      C1111233131211111211113313331333133313221211113313331333133313332112332   >>