21.   For the rest, Williams could only speculate as to the rationale.

22.   GE spokesman Rick Kennedy said he could not speculate as to when the modification will be complete.

23.   Guynn would not speculate as to when an economic downturn could occur and how the Federal Reserve Bank would react.

24.   He declined to speculate as to whether he thought there would be more.

25.   He is, nevertheless, one of House members speculated about as a possible future speaker should Gingrich fail in his rehabilitation.

26.   He speculated as to whether all were officiated by the same referees.

27.   He would not speculate as to when such a warming would occur.

28.   He said he could not speculate as to what would constitute that change.

29.   He said we should not speculate as to the cause or be afraid.

30.   I can only speculate as to why he is stonewalling.