uncertainty be 27.98   But there is uncertainty.
  uncertainty remain 4.67   Two uncertainties remain.
  uncertainty make 2.44   That uncertainty made for a jittery market.
  uncertainty surround 1.38   Continued uncertainties surround his role.
  uncertainty continue 1.25   Political uncertainty continues to discourage foreign investors.
  uncertainty have 0.86   The uncertainty has workers worried.
  uncertainty persist 0.72   Uncertainty persists over Afghan refugees.
  uncertainty affect 0.66   The uncertainty has badly affected morale.
  uncertainty cause 0.66   The uncertainty evidently causes him no discomfort.
  uncertainty come 0.66   More uncertainty came when Albright decided to go for her doctorate.
  uncertainty exist 0.66   At Blackburn, no such uncertainty exists.
  uncertainty linger 0.66   Still, the uncertainty lingers.
  uncertainty grow 0.59   Uncertainty grew.
  uncertainty keep 0.59   Gulf uncertainties keep US-Saudi ties close.
  uncertainty loom 0.59   Similar uncertainties loom about Iraq.
  uncertainty plague 0.59   New uncertainties plague UN investigators in Congo.
  uncertainty prevail 0.59   But for many Algerians, great uncertainty still prevails.
  uncertainty seem 0.59   Uncertainty seems to hover over everyone here.
  uncertainty arise 0.53   Uncertainty arises because of one major improvement in the electoral rules.
  uncertainty cloud 0.53   But the succession was clouded by uncertainty.
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