Matched context for half-waves and polarity

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

Share - half-waves	Share - polarity	Phrase
11.09%	5.15%	positive [certainty] {half-waves or polarity}
17.97%	1.44%	alternating [time periodicity] {half-waves or polarity}
17.76%	1.38%	voltage {half-waves or polarity}
4.65%	4.72%	negative [effectiveness] {half-waves or polarity}