C1111233131211111211113313331333133313232321331133132313331311331323112331   >>    C111123313121111121111331333133313331323232133113313231333131133132311233   <<    C1111233131211111211113313331333133313232321331133132313331311331323112333   >>      C1111233131211111211113313331333133313232321331133132313331311331323112332   >>