This design has been in place, with slight variations, since the 1967 season.

There have, however, been slight variations in the design over time.

There were only some very slight variations in size when two moved together.

And so it went, with slight variations, until the dream changed again.

Each store has a slight variation on these rules but generally you can trade up to two times per person.

Each performance was a slight variation of the same theme.

The one on the desk, however, showed a slight variation.

You've seen all these characters, with only slight variations, before, right?

He had heard this speech with its slight variations twenty times in the past month.

Any slight variation in the basic pattern did not matter, for they always fell over dead.