The corona igniter 20 also includes {HEAD ~ a gap filler} 78 formed of {TAIL ~ a non magnetic material} disposed in the core gap 34 
formed of
The corona igniter 20 also includes { HEAD ~ a gap filler } 78 formed of { TAIL ~ a non magnetic material } disposed in the core gap 34
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH