Matched context for close and opening

The page lists matched contexts for close and opening.

Share - close	Share - opening	Phrase
26.07%	1.69%	valve {close or opening}
3.56%	1.81%	inlet {close or opening}
6.23%	0.66%	port {close or opening}
7.42%	0.52%	exhaust [physical/chemical] {close or opening}
5.68%	0.49%	intake {close or opening}
1.78%	1.15%	throttle {close or opening}
1.19%	1.67%	outlet {close or opening}
1.08%	0.32%	air {close or opening}
0.71%	0.19%	chamber {close or opening}
0.91%	0.30%	fuel {close or opening}
1.31%	0.45%	injection {close or opening}