wherein the set of magnetic poles and the gap are arranged near {HEAD ~ a recording surface} of {TAIL ~ a magnetic recording medium}, 
of
wherein the set of magnetic poles and the gap are arranged near { HEAD ~ a recording surface } of { TAIL ~ a magnetic recording medium } ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH