21.   The math results provide the clearest signs of progress.

22.   The report by the National Association of Purchasing Management provide perhaps the clearest sign yet that the economy is weakening.

23.   The report provided the clearest sign yet that the economy is cooling off.

24.   The summer offered the clearest signs.

25.   To her, this is the clearest sign that Russia has no political will to combat crime.

26.   A senior Chinese official will visit Taiwan later this month in the clearest sign yet that Beijing is planning to resume talks with Taipei, a newspaper reported Sunday.

27.   But remarks by two in his inner circle were the clearest signs yet of anxiety in the Kremlin.

28.   But the remarks by two in his inner circle were the clearest signs yet of anxiety in the Kremlin.

29.   It was also the clearest sign yet of an emerging rift within the opposition, traditionally divided along tribal and political differences.

30.   The better-than-expected margin of victory offered the clearest sign yet that the Northern Ireland administration Trimble leads would enjoy a precious few months of stability.