C1111233131211111211113313331333133313232313331333133313331311331133132331221   >>    C111123313121111121111331333133313331323231333133313331333131133113313233122   <<    C1111233131211111211113313331333133313232313331333133313331311331133132331223   >>      C1111233131211111211113313331333133313232313331333133313331311331133132331222   >>