Example sentences of "[coord] may [verb] [adv] [noun] " in BNC.

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1 If the preservation of the protein structure in metal-free forms is a preferred feature in biological systems , it imposes constraints on the evolution of these proteins and may explain why evolution seems to have disfavoured highly charged metal clusters and why the more hydrophobic porphyrin systems dominate in higher organisms .
2 Social and sexual behaviour is common with much tactile contact by young animals , who stroke one another with their penis or flippers , and may swim together belly to belly or touching flippers — something similar to holding hands .
3 Dogs are surprisingly agile , and may leap over fences or even burrow under them , particularly if there is a bitch on heat nearby .
4 But this is their downfall : some species of Laboulbeniales recognise this biochemical convergence and may infest both ant and guest .
5 Sadistic people derive perverse pleasure from the suffering of others and may seek out situations in which they can inflict this .
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