Example sentences of "[conj] may have be [v-ing] " in BNC.

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1 Some younger ones too may want children to fill some need for love and affection that may have been lacking in their lives .
2 Undertaken sensitively and carefully by an experienced operator in controlled circumstances , regression therapy should be a beneficial and restorative experience for the subject , enabling him to be rid of a serious problem that may have been troubling him for years and indeed possibly ruining his life .
3 She was very religious and may have been considering the best approaches to make .
4 They seem to have happened periodically over the last 900 million years , and may have been doing so since the early days of Earth ( the longer ago something happened , the less likely it is that we will have tripped over the evidence ) .
5 Two thirds of those with baseline hypoxaemia had been born preterm and may have been suffering mild , clinically unapparent chronic lung disease .
6 Bill was with Boots the Chemist , and may have been working in Peterborough when Kathleen was with us — I ca n't remember .
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