Matched context for fluoride and sulfite

The page lists matched contexts for fluoride and sulfite.

Share - fluoride	Share - sulfite	Phrase
7.99%	14.64%	chromic [physical/chemical] {fluoride or sulfite}
5.74%	7.28%	calcium {fluoride or sulfite}
3.68%	6.75%	strontium {fluoride or sulfite}
3.75%	6.01%	barium {fluoride or sulfite}
3.71%	5.95%	magnesium {fluoride or sulfite}