,
|    ( karl ),( ken  ),( earl ),( rick ),( neal ),( dave ))
|
|   ( college ,
|    ( sam ),( gene ),( phil ),( don ),( ned ),( ol ))
|
|   (( single ),( married ),( divorced ))
|
|   ( single ,
|    ( art  ),( sam  ),( clyde ),( mike ),( doug ),( pete ),
|    ( fred ),( gene ),( ralph ),( ike  ),( nick ),( ken  ),( neal ))
|
|   ( married ,
|    ( al  ),( greg ),( john ),( lance ),( phil ),
|    ( don ),( ned  ),( karl ),( earl  ),( ol   ))
|
|   ( divorced ,
|    ( jim ),( george ),( rick ),( dave ))
|
|