As {TAIL ~ the joints} pass through {HEAD ~ this target area} 42, the hot gas 43 melts the solder mounds 
As { TAIL ~ the joints } pass through { HEAD ~ this target area } 42 , the hot gas 43 melts the solder mounds
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH