Some sort of shuffling is generally necessary to achieve fairness.

However residents often prefer to boil the water before drinking, although this is generally not necessary.

The following areas are generally necessary to be established:

In such environments explicit use of memory barriers is not generally necessary.

It is not generally necessary to engage in combat in order to win the game.

Boosters are generally necessary to launch spacecraft into Earth orbit or beyond.

Treatment is generally not necessary in people without symptoms.

Irrigation was generally not necessary, but drainage systems were often needed to remove excess water.

A multidisciplinary approach is generally necessary for optimal diagnosis and symptom management.

While six factors appear to be generally necessary, tropical cyclones may occasionally form without meeting all of the following conditions.