C111112111133131121133133313331333133313123221211113313232232211   >>    C11111211113313112113313331333133313331312322121111331323223221   <<    C111112111133131121133133313331333133313123221211113313232232213   >>      C111112111133131121133133313331333133313123221211113313232232212   >>