Matched context for by-product and gas

The page lists matched contexts for by-product and gas.

Share - by-product	Share - gas	Phrase
2.14%	11.98%	exhaust [physical/chemical] {by-product or gas}
10.47%	1.21%	combustion {by-product or gas}
2.41%	0.44%	combustible {by-product or gas}
2.95%	0.39%	exhaust {by-product or gas} [perform operation]
0.95%	0.20%	contain {by-product or gas} [perform operation]
2.07%	0.27%	produce {by-product or gas} [perform operation]