Matched context for back and extension

The page lists matched contexts for back and extension.

Share - back	Share - extension	Phrase
4.41%	0.30%	lever {back or extension}
1.66%	1.07%	piston {back or extension}
1.88%	0.32%	{back or extension} [location] locate
0.33%	0.71%	{back or extension} [does] have
0.84%	0.27%	body {back or extension}
0.62%	0.32%	engage {back or extension} [perform operation]
0.72%	1.31%	have {back or extension} [perform operation]
0.78%	0.49%	lower [location] {back or extension}
0.90%	0.54%	member {back or extension}
1.32%	0.39%	plate {back or extension}
1.04%	0.27%	portion {back or extension}
1.56%	0.25%	slidable [motion] {back or extension}
0.89%	0.24%	support {back or extension} [perform operation]
1.42%	0.20%	valve {back or extension}