Matched context for extend up and extend down

The page lists matched contexts for extend up and extend down.

Share - extend up	Share - extend down	Phrase
13.08%	11.03%	tube [does] {extend up or extend down}
10.43%	8.53%	pipe [does] {extend up or extend down}
8.47%	6.06%	section [does] {extend up or extend down}
7.99%	4.20%	portion [does] {extend up or extend down}