They should not be allowed to destroy world after world.

In world after world we find all records of Earth wiped out.

World after world had fallen into the Empire in just such a way.

Perhaps they searched world after world for the right kind of human beings.

The possibilities are enormous-world after world, all of them suitable for supporting life.

World after world, each closer toward the Center, where worlds were thick and commerce heavy.

For themselves, they create world after world of despair.

They spread, touching world after world, insinuating their way into a position of power.

They won the league three times after World War 2, including the league and cup double in 1953-54.

But after World War froze construction and enabled only part of the picture projected.