C11111333133313232233133313331333131123313221211113313133311111   >>    C1111133313331323223313331333133313112331322121111331313331111   <<    C11111333133313232233133313331333131123313221211113313133311113   >>      C11111333133313232233133313331333131123313221211113313133311112   >>