FAN 24 Pure Shifted Pungs (24 points)
Three Pungs or Kongs of the same suit, each shifted one up from the last.
DOES NOT COMBINE WITH:
Pure Triple Chow [23] (implied)
FREQUENCY:
Only about 0.2% of all MCR games end with this 3-sets combination scoring element.
source: Mahjong Greenbook MCR Rules 2014 (pdf)