Example sentences of "[modal v] have been [verb] some [noun] " in BNC.

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1 He must have been causing some problems .
2 It was believed that the device might have been planted some days earlier .
3 Although there may have been surviving some notion of the tradition of ordered government from the ancient world , in actuality Rome had no strong , centralized government since classical times .
4 If the path had crossed this line then a clear surface would have been encountered some distance below the clouds .
5 It is very easy to get involved in discussing whether Olive ought to have been given some knowledge of French wines before George moved , or perhaps persuaded to move to the city along with him .
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