Matched context for gasses and tract

The page lists matched contexts for gasses and tract.

Share - gasses	Share - tract	Phrase
5.81%	8.94%	exhaust [physical/chemical] {gasses or tract}
1.26%	31.07%	intake {gasses or tract}
0.31%	4.98%	engine {gasses or tract}
0.29%	4.62%	gas {gasses or tract}