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30 St么n: Brwydr Fawr Geth a Monty
Stori Gethin o Borthmadog sydd am golli 10 st么n mewn blwyddyn efo cymorth ei ffrind a'r corffluniwr, Sion Monty. We follow Gethin who wants to lose 10 stone in a year with his friend's help.
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