Design pattern for rule based reporting app

I am building out a reporting service for horse racing. There are three types of reports: Odds, Dividend, and Anchor. Data from each report depends on a set of bettypes (Win, Win&Composite, F-F, QTT, QTT&F-F) Some bettypes can share common logic to extract data

I need help on design pattern in order to create nice abstraction.

Thanks