Example sentences of "but then [pron] could be " in BNC.

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1 Colonel Mayhew was another , and Canon Devlin , but then they could be excused as being respected elders , as it were , of the community .
2 Mrs Browning moved restlessly , cleared her throat , said nothing in reply , but then what could be said ?
3 I have this theory that at such times he 's communing with the mother ship which gave him his mission on this planet , but then I could be wrong .
4 It seems unlikely that a Tibetan would have got up there to take them , but then it could be argued that it 's equally unlikely that a yeti was the culprit .
5 To some extent it may be that things are now different , but then it could be that parliamentary democracy is no longer a truly viable form of political organization .
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