Matched context for ph and pf

The page lists matched contexts for ph and pf.

Share - ph	Share - pf	Phrase
5.70%	25.27%	pressure {ph or pf}
3.83%	4.72%	{ph or pf} sensor
2.14%	2.33%	{ph or pf} [does] rise
1.79%	0.77%	adjust {ph or pf} [perform operation]
1.21%	0.66%	injection {ph or pf}