1.   Review copies are currently circulating among booksellers and critics, generating considerable talk and more than a few blushes.

2.   Within hours, however, copies were circulating on the Internet.

3.   Within hours, copies were circulating around the office.

4.   But leaked copies are circulating among the media.

5.   His pacifist songs about the futility of war were banned at the time, but bootleg copies circulated throughout South Vietnam and overseas.

6.   Review copies currently are circulating.

7.   Smuggled copies circulated widely among students and intellectuals in China, and party leaders frequently attacked Wang for fomenting dissent.