Which preposition to use with cogitates

over Occurrences 6%

Yet no sense of fear that projected itself into her busy brain as she cogitated over the task before her held her back.

on Occurrences 4%

There is, moreover, in the drama, the same distaste of the world which Byron himself expressed when cogitating on the desolation of his hearth, and the same contempt of the insufficiency of his genius and renown to mitigate contritionall in strange harmony with the same magnificent objects of sight.

in Occurrences 3%

Here these old, unsceptred, discrowned, and sky-fallen potentates "cogitate in their watery ooze," and in "the shady sadness of vales,"sometimes visited by their successors for counsel or concealment, or for the purpose of establishing harmony amongst them.

for Occurrences 2%

the hilarity of a wedding in his heart, he cogitated for some time in silence, when, having thought a preliminary question or two necessary, he broke it with saying "Everything, I suppose, master, is settled between the young people?" "Everything, I take it, Peter.

about Occurrences 1%

During dinner, though Valentine talked and laughed, he could not help stealing a minute now and then to gaze at the bride, till John, darting a sudden look at him, brought him to his senses; but he cogitated about her, though he did not repeat the offence.

at Occurrences 1%

After cogitating at my lodging, with bread and water before me, I concluded that I would write an entirely fictitious narrative called "The Life and Adventures of Joseph Sell, the Great Traveller."

Which preposition to use with  cogitates