81.   But does this break with the past, an open secret for weeks now, portend basic changes at Time?

82.   But federal officials said the company had not made timely reports to state and federal regulators about the pollution potential of changes at some of its factories.

83.   But for Throwing Muses, an influential alternative-rock band with relatively low record sales, the changes at Warner Music were unhealthy and harrowing.

84.   But he added sometimes one event can trigger the downsizing, such as a change at the top.

85.   But here, as in many other parts of South Africa, it is clear that changes at the top have yet to filter down.

86.   But hormonal changes at puberty may also be involved.

87.   But if GOP defeats are heavy, the Republican Conference may not stop with one change at the top.

88.   But making big changes at CNN may not be cheap.

89.   But negotiators were still haggling over a rule stating that two-thirds of teachers have to approve policy changes at schools.

90.   But Ross has also been involved in many positive changes at the museum.