Matched context for shut down and retrofit

The page lists matched contexts for shut down and retrofit.

Share - shut down	Share - retrofit	Phrase
20.08%	4.78%	{shut down or retrofit} engine [perform operation]
9.47%	4.88%	{shut down or retrofit} system [perform operation]
0.90%	6.78%	{shut down or retrofit} modal can
0.83%	4.20%	{shut down or retrofit} vehicle [perform operation]
2.27%	1.34%	system [does] {shut down or retrofit}
0.62%	3.05%	{shut down or retrofit} modal may