Matched context for bc and pfr

The page lists matched contexts for bc and pfr.

Share - bc	Share - pfr	Phrase
15.75%	8.46%	cylinder {bc or pfr}
3.48%	15.07%	pressure {bc or pfr}
3.32%	12.16%	brake {bc or pfr}
2.20%	10.11%	hydraulic [physical/chemical] {bc or pfr}