11.   I imagined myself being buried with the thing, the way primitive tribes inter people with their most treasured possessions.

12.   One former leader flew a stunt plane, while another marched through equatorial jungles to film primitive tribes for documentaries.

13.   Primitive tribes ate the hearts of brave enemies or large animals because they believed they were ingesting the strength and courage of the owner of that heart.

14.   He and the others were working on a government project to study the remote forests inhabited by primitive tribes.

15.   No roads were to be built between camps or to the outside world to prevent colonizers from flooding the remote region populated by primitive Amazon tribes.

16.   Primitive Indian tribes live nearby.