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 foo foo foo foo 
 foo foo foo foo 
 foo foo foo foo     some foo-related thing
...
 bar bar bar bar     some bar-related thing
 bar bar bar bar 
 bar bar bar bar

 foo foo foo foo      some foo-related thing
 foo foo foo foo 
 foo foo foo foo
...
 bar bar bar bar
 bar bar bar bar 
 bar bar bar bar