C1111133313331323223313331333133313331333131121133133313331333133313232231111   >>    C111113331333132322331333133313331333133313112113313331333133313331323223111   <<    C1111133313331323223313331333133313331333131121133133313331333133313232231113   >>      C1111133313331323223313331333133313331333131121133133313331333133313232231112   >>