21.   But it has made little headway addressing underlying problems like the huge volumes of bad loans that have crippled its banking system.

22.   But some people say banning the song will not address the underlying problem.

23.   But the basic underlying problem was purely partisan politics.

24.   But the growth of Maxim points to an underlying problem for Playboy.

25.   But the underlying problem is not operational.

26.   But the underlying problem, she says, was that parents were not satisfied.

27.   But there was an underlying problem with the speech.

28.   But the underlying problem had not changed, and I had been sent yet another signal that my disease was worsening.

29.   But the underlying problem will not ease when the rainy season begins.

30.   But the underlying problem would not have vanished.