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Shimano 333, F, G[1]
  Number of gear teeth        
Gear Sun Gear 1 Pinion to Sun 1 Pinion to Ring 1 Ring gear 1 Path, 1=R to P, 2=Direct, 3=P to R Gear Drive Ratio Drive ratio as fraction Ratio incre- ment
1 16 16 16 48 1 0.750    3/4   
2 16 16 16 48 2 1.000 1        1.333
3 16 16 16 48 3 1.333 1   1/3  1.333

[1]
John Allen:
These hubs have 4 planet gears. Ratios are from the literature. Tooth count is from memory.