Matched context for buildup and pf

The page lists matched contexts for buildup and pf.

Share - buildup	Share - pf	Phrase
22.17%	25.27%	pressure {buildup or pf}
2.41%	3.79%	brake {buildup or pf}
1.02%	6.94%	fluid [state] {buildup or pf}
0.37%	11.93%	fuel {buildup or pf}
1.57%	0.67%	{buildup or pf} in chamber
0.34%	0.36%	not {buildup or pf}
1.04%	0.89%	reduce {buildup or pf} [perform operation]