If all the information we've gathered is accurate, he slips back and forth, unable to distinguish which.

Their forms slip back and forth from abstractions to landscapes in miniature.

And sort of like I slip back and forth beqeen two places.

Lax security at the border allows Taliban fighters to slip back and forth.

It's going slow and slipping back and forth; already there are at least four inches of fresh snow on the road.

No matter how I moved, the cord grew taut between my legs, slipping back and forth.

Frank slips back and forth between his two selves for comedy's sake.

Actually, Smith has a good idea why, and he elaborates on it while slipping back and forth in time.

Through most of the book, he slips back and forth between 1962 and 1966, often without mentioning dates.

The helmet slipped back and forth on the reporter's forehead.