Over time his structures have become lighter in form.

The existing structure, which had been in use since 1835, had become too small.

At this point of development the structures that eventually form the face and neck are becoming evident.

By the time that Kaplan took over, the basic structure and style of the magazine had become highly successful.

These legal structures are becoming more common throughout the developed world.

Their varieties, structures and modes of operation have become well known in the past several decades.

A truly wonderful structure became even more beautiful, especially at night.

Different structures of government management have become drawn into the crisis as well.

Over time, the structure has become clearer and the subject areas more specific.

This structure was very popular in the past but has become less common in recent times.