Example sentences of "[verb] up over [art] period " in BNC.

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1 Er and it 's a force commitment it is n't I mean short of saving up over a period of years which we are not allowed to do
2 Another proof is taken and so the print is built up over a period of time .
3 Strong and sometimes quite intense relationships with individuals are built up over a period of even a few weeks .
4 Clearly memories are not formed instantaneously , as if by throwing a switch , but are built up over a period of hours after the event to be memorized has occurred ; during this build-up the form in which any memory is stored changes .
5 it is n't necessary , well it is the same as saying it is n't true , it is n't necessary er because this will be built up over a period and it will be for er the Government in all the normal ways in the public expenditure round to decide how much goes into the passenger franchises and through that therefore into the Briti the Rail Track investment .
6 In fact there was a , I think some of the recent erm concerns about schools have come from an image that 's been built up over a period of time that the schools spend very little time on the , on the three Rs for example .
7 Even so , considerable errors can build up over the period of ten or more years that elapses between one Census date and the time when the finalized results of the next Census can be used .
8 All the small modifications should add up over a period of time to make major achievements .
9 Our experience generally in North Yorkshire 's been over the last ten years that overall , there have been exceptions , but generally overall , there 's not been a problem about local plans drying up and then allocations drying up over the period , generally .
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