Matched context for half-waves and vp

The page lists matched contexts for half-waves and vp.

Share - half-waves	Share - vp	Phrase
17.76%	10.27%	voltage {half-waves or vp}
11.09%	2.36%	positive [certainty] {half-waves or vp}
4.65%	1.48%	negative [effectiveness] {half-waves or vp}