• source
  7.09%
  Stone cites two sources.
• concern
  5.33%
  It cited budget concerns.
• reason
  4.59%
  It cited two reasons.
• example
  2.52%
  He cited an example.
• lack
  2.37%
  Some cited a lack of aggressive defense.
• case
  2.27%
  He cites two cases.
• report
  2.20%
  He cited reports from peacekeepers in Zepa.
• problem
  1.67%
  He cited back problems.
• official
  1.45%
  He cited officials close to the investigation.
• need
  1.44%
  He cites the need for secrecy.
• difficulty
  0.54%
  North Korea cited logistical difficulties.

• have
  50.02%
  Freddie is having difficulties, too.
• face
  9.00%
  But both policies face difficulties.
• experience
  2.78%
  Suppose you are experiencing some difficulty.
• encounter
  2.41%
  Other funds have encountered similar difficulties.
• cause
  2.01%
  And wet ink can cause difficulties.
• overcome
  1.99%
  He never completely overcame his difficulties.
• acknowledge
  1.54%
  Carol acknowledges the difficulties.
• underscore
  1.23%
  But his success only underscores the difficulty of doing so.
• cite
  1.21%
  North Korea cited logistical difficulties.
• pose
  1.05%
  Each one, however, poses difficulties.