31.   In a fight between men who are past their prime, the most telling factor surely must be motivation.

32.   In formulating answers to the two basic questions, one factor was paramount.

33.   In recent Decades the most important factors have probably been the increasing number of home owners and rises in house prices.

34.   In such cases two principal factors are at work.

35.   In the future, the culture factor should be more dominant in the debate.

36.   In the mills additional factors have been rationalisation and the use of more modern machinery.

37.   It is obvious that affective factors are involved even in the most abstract forms of intelligence.

38.   It soon became apparent that a crucial factor was the readiness of interviewees to take up areas referred to in the questions.

39.   Left-wing factors are a party to this move.

40.   Nevertheless there are important factors that give a strong impetus to a reductivist reasoning.