cannot prove ( synonym found)
Definition of cannot prove:

°To form by an exercise of ingenuity; to devise; to plan; to scheme; to plot.
°To invent, to make devices; to form designs especially by improvisation.
Definition of cannot prove:

°To form by an exercise of ingenuity; to devise; to plan; to scheme; to plot.
°To invent, to make devices; to form designs especially by improvisation.
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