(;GM[1]FF[4]SZ[19]
GN[[L-groups\]]
PC[http://senseis.xmp.net/?CornerShapes]AP[GoWiki:2009]
DT[2011-09-01]
C[Diagram from http://senseis.xmp.net/?CornerShapes

[L-groups\]]
PL[W]

AB[cb][cc][bd][cd]
AW[db][eb][dc][dd][be][ce][ee][bf]
SQ[ea][be]
TR[db]


;SQ[ea][be]
TR[db]
)
