C1111233131211111211113313331333133313232313331333133313321133131133112331   >>    C111123313121111121111331333133313331323231333133313331332113313113311233   <<    C1111233131211111211113313331333133313232313331333133313321133131133112333   >>      C1111233131211111211113313331333133313232313331333133313321133131133112332   >>