There seemed to be no clear pattern to the brain destruction.
In many cases, there is no clear pattern of inheritance.
There is no clear pattern of race, age, marital status, or previous children.
Officials have said the fires do not appear to follow a clear pattern.
Yet, for those who have sat through it all, there are clear patterns emerging.
As yet, he had seen no clear pattern to the spy's behavior.
The recent deaths at parks all over the country offer no clear pattern.
The difference is small, but the statistics point to a clear pattern.
The police say they are puzzled by the lack of a clear pattern.
Except for the political connection, the killings lack a clear pattern.