Some flux lines leaving the north pole of the permanent magnet connect to the south pole of the magnetized string and an equal number of flux lines leaving the north pole of the magnetized string connect to the south pole of the permanent magnet.
(Some flux lines; leaving; the north pole of the permanent magnet) (Some flux lines leaving the north pole of the permanent magnet; connect; ) (flux lines; leaving; the north pole of the magnetized string)
Some flux lines Some flux lines leaving the north pole of the permanent magnet flux lines
leaving connect leaving
the north pole of the permanent magnet
the north pole of the magnetized string