Example sentences of "may not have have a " in BNC.

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No Sentence
1 She may or may not have had a longstanding paranoid personality ; that 's hard for relatives to cope with , but not necessarily pathological . ’
2 It makes no difference that the parent may not have wished to go ( during the war ) or may not have had a choice ( death ) .
3 There is no reason to think that people in the past may not have had a profound understanding of God , an understanding which will illuminate one 's own .
4 However , although the polenier event is associated with cooling of the ocean , it may not have had a very large impact on the carbon dioxide balance .
5 Thus , prices on Simex may not have had a measurable effect on the index .
6 Consequently , other market members ( and their customers ) may not have had a proper opportunity to participate in the trade .
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