(;GM[1]FF[4]SZ[19]
GN[corner]
PC[http://senseis.xmp.net/?posting=3885]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?posting=3885

corner]
PL[B]

AB[aa][ba][ca][da][ab][db][ac][dc][ad][dd][ae][be][ce][de]
AW[ea][eb][bc][cc][ec][bd][cd][ed][ee][af][bf][cf][df][ef]
CR[cc]


;CR[cc]
)
