11.   He seemed more concerned to break than maintain the shaky truce existing between him and his father.

12.   I have indicated that a wide and unacceptable gap exists between central plans and local realities.

13.   If any bad feelings existed between the two of them, I was not aware of it.

14.   Important differences existed between the clinical and rehabilitation members in their approach to patient management.

15.   In an earlier chapter we described a few of the complex relationships which exist between different species and different kingdoms of nature.

16.   In terms of military conquest, a considerable difference existed between the conditions encountered in the north and the south of Siberia.

17.   It has long been known in education circles that a clear correlation exists between social class background and examination success.

18.   It is not easy to explain the disparity that still exists between the salaries of men and women.

19.   It shows the close association that can exist between organic chemical synthesis and clay surfaces.

20.   Little fraternal love existed between these two clandestine arms of government.