As a result {TAIL ~ maintenance} for {HEAD ~ the power source cable} is improved, and production costs lowered 
As a result { TAIL ~ maintenance } for { HEAD ~ the power source cable } is improved , and production costs lowered
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH