61.   If, not, then all the rules change.

62.   If fully enforced, the new rules could profoundly change working conditions on Capitol Hill, eliminating safety hazards, reducing job discrimination and providing more overtime pay.

63.   If the rules had changed last year, Caltech would have been on top a year earlier.

64.   In Korea, regulations mostly forbid cross-selling, although the rules may soon change.

65.   In the intervening year, the rules changed.

66.   Instead, he told me the rules have changed.

67.   In true crises, the rules may well change.

68.   It is clear, however, that the new rule will change the way that Wall Street analysts work.

69.   It is for Japan to decide whether its rules should change.

70.   It creates its own hard-case universe in which the rules change constantly, the stakes are always rising, and no one can be trusted.