(;GM[1]FF[4]SZ[4]
GN[Four Groups]
PC[http://senseis.xmp.net/?MaximumNumberOfLiveGroups]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?MaximumNumberOfLiveGroups

Four Groups]
PL[W]

AB[ba][ab][db][dc][ad][bd][cd]
AW[ca][da][cb][ac][bc]


;
)
