FAN 30 Pure Shifted Chows (16 points)
Three Chows in one suit, each shifted up either one or two numbers from the last, but not a combination of both.
DOES NOT COMBINE WITH:
n/a
FREQUENCY:
Only about 3.5% of all MCR games end with this 3-sets combination scoring element.
source: Mahjong Greenbook MCR Rules 2014 (pdf)