21.   Because expression may exist at various levels of abstraction the courts have to be able to distinguish between idea and expression.

22.   You must leave tomorrow, Clearly, in our experience, the leaving must occur after the obligation which exists at the moment of speaking.

23.   No long interest rate future or option contract exists at present due to the lack of liquidity in the underlying cash bond market.

24.   Some of these plate boundary configurations and stages of development are largely conjectural since clear examples do not exist at the present day.

25.   Such unemployment as exists at any time is due wholly to the frictional resistances prevent wage and price adjustments being made instantaneously.

26.   This need exists at both school and higher education level and is largely unmet.

27.   Local environmentalists have fiercely criticized the fact that unsafe conditions still exist at the plant even after three years of clean-up work.

28.   It could limit or remove altogether certain rights presumed to exist at common law.

29.   An original toilet did exist at Stanley Racing which was not suitable for disabled people.

30.   Already there are signs that the huge cost of developing nuclear arsenals will make life materially harder for hundreds of millions who even now exist at subsistence level.