Matched context for po and pfd

The page lists matched contexts for po and pfd.

Share - po	Share - pfd	Phrase
19.87%	21.37%	pressure {po or pfd}
5.35%	15.75%	signal {po or pfd}
1.49%	46.05%	desired [effectiveness] {po or pfd}
2.61%	16.81%	fuel {po or pfd}