31.   There are difficulties associated with automatic text recognition however.

32.   There are of course difficulties in compiling any such table.

33.   There are practical difficulties with parallel computers.

34.   There are several difficulties with longitudinal studies, in addition to the usual problems of sample-based survey research.

35.   There are several difficulties with this theory.

36.   There is no difficulty in recognizing a red blood cell, a muscle cell, or a nerve cell.

37.   There is some difficulty over whether or not gypsies fall within the definition.

38.   There were difficulties enforcing regulations at the Colombo slaughterhouse.

39.   There were enormous difficulties, equally, in the sphere of cultural policy and minority rights.

40.   There were further difficulties when one began thinking about the numbers of animals required at the Creation.