Matched context for cleanliness and operability

The page lists matched contexts for cleanliness and operability.

Share - cleanliness	Share - operability	Phrase
31.67%	4.13%	engine {cleanliness or operability}
13.68%	7.74%	improve {cleanliness or operability} [perform operation]
16.69%	1.69%	maintain {cleanliness or operability} [perform operation]
5.47%	4.93%	high [size] {cleanliness or operability}