31.   But in Washington and around the country, opponents are building their cases.

32.   But it is still unclear whether he has given Starr any information that could be used to build a case of perjury or obstruction of justice against the president.

33.   But if Riley and his lawyers were building a case to free him from his legal commitment, the hit-and-run strategy makes more sense.

34.   But Masry had notified authorities, who began building a case against the suspects.

35.   But officials said such material was of little use to prosecutors, who build their cases around witnesses willing to testify in U.S. courts.

36.   But instead, the records were used improperly to build a case against him, the judge said.

37.   But starting Sunday, it will lay out in detail what it does know, and it will build its case for taking remedial action.

38.   But the department hard-liners were winning, and they were building a case to block the deal.

39.   But they also made it difficult for prosecutors to build a case against the president and first lady based largely on the testimony of felons.

40.   But when the Massachusetts State Police began building a case against Bulger, the FBI joined the probe that resulted in the current federal racketeering indictment.