Matched context for retrain and switch over

The page lists matched contexts for retrain and switch over.

Share - retrain	Share - switch over	Phrase
23.41%	8.12%	position [location] {retrain or switch over}
20.01%	1.91%	system [does] {retrain or switch over}
17.82%	0.74%	time [temporal] {retrain or switch over}