{TAIL ~ The iron core} is formed of {HEAD ~ particles} of iron or an iron based magnetic material 
{ TAIL ~ The iron core } is formed of { HEAD ~ particles } of iron or an iron based magnetic material
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH