Example sentences of "for [noun pl] we [verb] [adv] [vb infin] " in BNC.

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1 He says asthma has been becoming increasingly common for the last 20 years for reasons we do n't understand .
2 The male does sometimes mate with one of the young female helpers but this , for reasons we do not understand , never seems to result in pregnancy .
3 Perhaps , for reasons we do not understand , the patterns of interconnections in the smell-brain are under a more versatile system of genetic control , and this allowed the rapid evolution of the neocortex , facilitating the neopallial explosion .
4 Goldney , for reasons we do not know , declined the offer of the Cherokee earth and it therefore fell to Cookworthy and Champion to perfect the porcelain known as ‘ Bristol China ’ .
5 Although the application of NIPPV on a general ward has been described as a difficult and time-consuming procedure for nurses we did not find this to be the case .
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