CT, voters divide into groups to register their support for a particular candidate.

CNN: Edwards, Kucinich agree to share support in Iowa caucuses

It has been said that the members of the Senate divide into two groups: those who look into the bathroom mirror each morning imagining they hear "Hail to the Chief, " and those who do not -- with the latter list thought to be the shorter.

CNN: Could Gingrich Top GOP's 2000 List? - 01-10-98

Modern mammals divide into three overarching groups: the placentals (most species, including man), the marsupials (kangaroos and their like) and the monotremes (the egg-laying platypus and echidnas).

ECONOMIST: Rewriting the history of the mammals

Finnigan notes that Google Plus, the new Google social networking site, makes it easier to divide contacts into discreet groups like friends, family, and professional contacts.

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This year's changes divide taxpayers into three groups.

WSJ: The New Capital-Gains Maze

As I will elaborate, I find it useful to divide these tools into three groups.

FORBES: The Crisis and the Policy Response

They divide these countries into two groups according to whether they have civil-law or common-law systems.

ECONOMIST: Protection money

Because net listeners divide up fairly neatly into groups, the advertisements, again in principle, can be tightly targeted.

ECONOMIST: How well is net radio fulfilling its early promise?

Divide your class into four groups.

CNN: RELATED

Divide the class into small groups.

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You could divide these seven into yet more groups, but this will do for now.

FORBES: Whither the Republicans, Part II