31.   However militant groups have sprung up in the past several years.

32.   However, several militant groups have sprung up in recent years and they regularly clash.

33.   Militia groups have sprung up nationwide in the past year, boosted by the current anti-government fervor in politics.

34.   Most followers of the two main Islamic sects live peacefully in Pakistan, but in recent years militant groups have sprung up and they routinely clash.

35.   Similar celebrity-seeking groups have sprung up in Los Angeles and Boston.

36.   Support groups would have sprung up on the Internet.

37.   In the mainly Islamic north groups have sprung up to enforce the Sharia law code, exacerbating tensions with the Christian minority.

38.   The new report finds paramilitary groups have sprung up in new areas since the previous study.