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P. and V. πολλάκις θαμά (Plato), P. συχνόν, Ar. and P. πυκνά, Ar. and V. πολλά.
oftener: P. πλεονάκις.
oftenest: P. πλειστάκις.
how often, indirect: P. ὁσάκις.
as often as: P. ὁσάκις.
as often as possible: P. ὡς πλειστάκις.
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