11.   It seems that the majority was looking backward to the years between the framing of the Constitution and the New Deal.

12.   The idea is to run each gene tree backward to the ancestral gene at the root of the tree.

13.   Zyuganov offers Russians a look backward to Communist tyranny.

14.   Tatsuyoshi fell backward to the floor and lay for about a minute before trainers and doctors revived him.