21.  He said Chechen fighting units are observing a moratorium on fighting, and that the attacks are staged by individual groups of rebels.

22.  It is fragmented into individual groups and organizations.

23.  So they bring genetic diversity into the mitochondrial DNA of individual groups, while spreading it between populations, creating a more uniform blend in each.

24.  Still, individual groups are feeling the squeeze as the economy adapts.

25.  These individual groups probably intermingled with archaic humans such as the Neanderthal, said the researchers, who analyzed ancient skulls from around the world.

26.  Throughout the war small-scale prisoner exchanges have taken place, often negotiated between individual Chechen groups and Russian units.

27.  The military government in Rangoon last year began pursuing ceasefire agreements with individual groups and now claims that only the Karen National Union remains in rebellion.